diff --git a/poetry.lock b/poetry.lock
index 3cc1bd6..9d70c99 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -30,7 +30,7 @@ cached-property = "*"
 
 [[package]]
 name = "astroid"
-version = "2.8.5"
+version = "2.8.6"
 description = "An abstract syntax tree for Python with inference support."
 category = "dev"
 optional = false
@@ -103,7 +103,7 @@ stevedore = ">=1.20.0"
 
 [[package]]
 name = "black"
-version = "21.10b0"
+version = "21.11b1"
 description = "The uncompromising code formatter."
 category = "dev"
 optional = false
@@ -114,9 +114,9 @@ click = ">=7.1.2"
 mypy-extensions = ">=0.4.3"
 pathspec = ">=0.9.0,<1"
 platformdirs = ">=2"
-regex = ">=2020.1.8"
+regex = ">=2021.4.4"
 tomli = ">=0.2.6,<2.0.0"
-typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\""}
+typed-ast = {version = ">=1.4.2", markers = "python_version < \"3.8\" and implementation_name == \"cpython\""}
 typing-extensions = [
     {version = ">=3.10.0.0", markers = "python_version < \"3.10\""},
     {version = "!=3.10.0.1", markers = "python_version >= \"3.10\""},
@@ -131,7 +131,7 @@ uvloop = ["uvloop (>=0.15.2)"]
 
 [[package]]
 name = "blacken-docs"
-version = "1.11.0"
+version = "1.12.0"
 description = "Run `black` on python code blocks in documentation files"
 category = "dev"
 optional = false
@@ -277,7 +277,7 @@ python-versions = ">=3.6,<4.0"
 
 [[package]]
 name = "cryptography"
-version = "35.0.0"
+version = "36.0.0"
 description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
 category = "dev"
 optional = false
@@ -288,7 +288,7 @@ cffi = ">=1.12"
 
 [package.extras]
 docs = ["sphinx (>=1.6.5,!=1.8.0,!=3.1.0,!=3.1.1)", "sphinx-rtd-theme"]
-docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
+docstest = ["pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
 pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
 sdist = ["setuptools_rust (>=0.11.4)"]
 ssh = ["bcrypt (>=3.1.5)"]
@@ -328,7 +328,7 @@ pipenv = ["pipenv"]
 
 [[package]]
 name = "filelock"
-version = "3.3.2"
+version = "3.4.0"
 description = "A platform independent file lock."
 category = "dev"
 optional = false
@@ -397,6 +397,20 @@ python-versions = ">=3.7"
 gitdb = ">=4.0.1,<5"
 typing-extensions = {version = ">=3.7.4.3", markers = "python_version < \"3.10\""}
 
+[[package]]
+name = "gunicorn"
+version = "20.1.0"
+description = "WSGI HTTP Server for UNIX"
+category = "main"
+optional = true
+python-versions = ">=3.5"
+
+[package.extras]
+eventlet = ["eventlet (>=0.24.1)"]
+gevent = ["gevent (>=1.4.0)"]
+setproctitle = ["setproctitle"]
+tornado = ["tornado (>=0.2)"]
+
 [[package]]
 name = "html5lib"
 version = "1.1"
@@ -417,14 +431,14 @@ lxml = ["lxml"]
 
 [[package]]
 name = "identify"
-version = "2.3.5"
+version = "2.4.0"
 description = "File identification library for Python"
 category = "dev"
 optional = false
 python-versions = ">=3.6.1"
 
 [package.extras]
-license = ["editdistance-s"]
+license = ["ukkonen"]
 
 [[package]]
 name = "idna"
@@ -531,7 +545,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "jedi"
-version = "0.18.0"
+version = "0.18.1"
 description = "An autocompletion tool for Python that can be used for text editors."
 category = "dev"
 optional = false
@@ -542,7 +556,7 @@ parso = ">=0.8.0,<0.9.0"
 
 [package.extras]
 qa = ["flake8 (==3.8.3)", "mypy (==0.782)"]
-testing = ["Django (<3.1)", "colorama", "docopt", "pytest (<6.0.0)"]
+testing = ["Django (<3.1)", "colorama", "docopt", "pytest (<7.0.0)"]
 
 [[package]]
 name = "jeepney"
@@ -849,7 +863,7 @@ python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 
 [[package]]
 name = "pbr"
-version = "5.7.0"
+version = "5.8.0"
 description = "Python Build Reasonableness"
 category = "dev"
 optional = false
@@ -892,7 +906,7 @@ python-versions = ">=3.6"
 
 [[package]]
 name = "pkginfo"
-version = "1.7.1"
+version = "1.8.1"
 description = "Query metadatdata from sdists / bdists / installed packages."
 category = "dev"
 optional = false
@@ -1361,11 +1375,11 @@ python-versions = "*"
 
 [[package]]
 name = "typing-extensions"
-version = "3.10.0.2"
-description = "Backported and Experimental Type Hints for Python 3.5+"
+version = "4.0.0"
+description = "Backported and Experimental Type Hints for Python 3.6+"
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "urllib3"
@@ -1448,10 +1462,13 @@ python-versions = ">=3.6"
 docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
 testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "jaraco.itertools", "func-timeout", "pytest-black (>=0.3.7)", "pytest-mypy"]
 
+[extras]
+deployment = ["gunicorn"]
+
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "90ea82bce76aa32eacecb09f8a938cfdb8120d0590ef4a8de44e140bd4b166a9"
+content-hash = "32b3b894e02b103ce94247add0af4a210cfa43c49f7b4aa5eb879adf69ee5cb2"
 
 [metadata.files]
 aniso8601 = [
@@ -1467,8 +1484,8 @@ appnope = [
     {file = "aspy.refactor_imports-2.2.0.tar.gz", hash = "sha256:78ca24122963fd258ebfc4a8dc708d23a18040ee39dca8767675821e84e9ea0a"},
 ]
 astroid = [
-    {file = "astroid-2.8.5-py3-none-any.whl", hash = "sha256:abc423a1e85bc1553954a14f2053473d2b7f8baf32eae62a328be24f436b5107"},
-    {file = "astroid-2.8.5.tar.gz", hash = "sha256:11f7356737b624c42e21e71fe85eea6875cb94c03c82ac76bd535a0ff10b0f25"},
+    {file = "astroid-2.8.6-py3-none-any.whl", hash = "sha256:cd8326b424c971e7d87678609cf6275d22028afd37d6ac59c16d47f1245882f6"},
+    {file = "astroid-2.8.6.tar.gz", hash = "sha256:5f6f75e45f15290e73b56f9dfde95b4bf96382284cde406ef4203e928335a495"},
 ]
 atomicwrites = [
     {file = "atomicwrites-1.4.0-py2.py3-none-any.whl", hash = "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197"},
@@ -1491,12 +1508,12 @@ bandit = [
     {file = "bandit-1.7.1.tar.gz", hash = "sha256:a81b00b5436e6880fa8ad6799bc830e02032047713cbb143a12939ac67eb756c"},
 ]
 black = [
-    {file = "black-21.10b0-py3-none-any.whl", hash = "sha256:6eb7448da9143ee65b856a5f3676b7dda98ad9abe0f87fce8c59291f15e82a5b"},
-    {file = "black-21.10b0.tar.gz", hash = "sha256:a9952229092e325fe5f3dae56d81f639b23f7131eb840781947e4b2886030f33"},
+    {file = "black-21.11b1-py3-none-any.whl", hash = "sha256:802c6c30b637b28645b7fde282ed2569c0cd777dbe493a41b6a03c1d903f99ac"},
+    {file = "black-21.11b1.tar.gz", hash = "sha256:a042adbb18b3262faad5aff4e834ff186bb893f95ba3a8013f09de1e5569def2"},
 ]
 blacken-docs = [
-    {file = "blacken_docs-1.11.0-py2.py3-none-any.whl", hash = "sha256:9fcd6c11fd6e128fa25b0bbb30e6a054bf81e818ffdee4c6c2281a77e75696f0"},
-    {file = "blacken_docs-1.11.0.tar.gz", hash = "sha256:cce2e16d2d97ee1bbbb4659ae9094d93bec2acc71b2153d1d2c81cf124de81d3"},
+    {file = "blacken_docs-1.12.0-py2.py3-none-any.whl", hash = "sha256:a81e0abc9771521f445ee582f469c8ec2f5880c19c369d766bb151f79f642d7b"},
+    {file = "blacken_docs-1.12.0.tar.gz", hash = "sha256:3e8138b22c33406cef5946058e535a8aca45cd64b8e7d392b3bd1329fc1f4af8"},
 ]
 cachecontrol = [
     {file = "CacheControl-0.12.10-py2.py3-none-any.whl", hash = "sha256:b0d43d8f71948ef5ebdee5fe236b86c6ffc7799370453dccb0e894c20dfa487c"},
@@ -1644,26 +1661,27 @@ crashtest = [
     {file = "crashtest-0.3.1.tar.gz", hash = "sha256:42ca7b6ce88b6c7433e2ce47ea884e91ec93104a4b754998be498a8e6c3d37dd"},
 ]
 cryptography = [
-    {file = "cryptography-35.0.0-cp36-abi3-macosx_10_10_x86_64.whl", hash = "sha256:d57e0cdc1b44b6cdf8af1d01807db06886f10177469312fbde8f44ccbb284bc9"},
-    {file = "cryptography-35.0.0-cp36-abi3-macosx_11_0_arm64.whl", hash = "sha256:ced40344e811d6abba00295ced98c01aecf0c2de39481792d87af4fa58b7b4d6"},
-    {file = "cryptography-35.0.0-cp36-abi3-manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:54b2605e5475944e2213258e0ab8696f4f357a31371e538ef21e8d61c843c28d"},
-    {file = "cryptography-35.0.0-cp36-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.manylinux_2_24_aarch64.whl", hash = "sha256:7b7ceeff114c31f285528ba8b390d3e9cfa2da17b56f11d366769a807f17cbaa"},
-    {file = "cryptography-35.0.0-cp36-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:2d69645f535f4b2c722cfb07a8eab916265545b3475fdb34e0be2f4ee8b0b15e"},
-    {file = "cryptography-35.0.0-cp36-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:4a2d0e0acc20ede0f06ef7aa58546eee96d2592c00f450c9acb89c5879b61992"},
-    {file = "cryptography-35.0.0-cp36-abi3-manylinux_2_24_x86_64.whl", hash = "sha256:07bb7fbfb5de0980590ddfc7f13081520def06dc9ed214000ad4372fb4e3c7f6"},
-    {file = "cryptography-35.0.0-cp36-abi3-musllinux_1_1_aarch64.whl", hash = "sha256:7eba2cebca600a7806b893cb1d541a6e910afa87e97acf2021a22b32da1df52d"},
-    {file = "cryptography-35.0.0-cp36-abi3-musllinux_1_1_x86_64.whl", hash = "sha256:18d90f4711bf63e2fb21e8c8e51ed8189438e6b35a6d996201ebd98a26abbbe6"},
-    {file = "cryptography-35.0.0-cp36-abi3-win32.whl", hash = "sha256:c10c797ac89c746e488d2ee92bd4abd593615694ee17b2500578b63cad6b93a8"},
-    {file = "cryptography-35.0.0-cp36-abi3-win_amd64.whl", hash = "sha256:7075b304cd567694dc692ffc9747f3e9cb393cc4aa4fb7b9f3abd6f5c4e43588"},
-    {file = "cryptography-35.0.0-pp36-pypy36_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:a688ebcd08250eab5bb5bca318cc05a8c66de5e4171a65ca51db6bd753ff8953"},
-    {file = "cryptography-35.0.0-pp36-pypy36_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:d99915d6ab265c22873f1b4d6ea5ef462ef797b4140be4c9d8b179915e0985c6"},
-    {file = "cryptography-35.0.0-pp36-pypy36_pp73-manylinux_2_24_x86_64.whl", hash = "sha256:928185a6d1ccdb816e883f56ebe92e975a262d31cc536429041921f8cb5a62fd"},
-    {file = "cryptography-35.0.0-pp37-pypy37_pp73-macosx_10_10_x86_64.whl", hash = "sha256:ebeddd119f526bcf323a89f853afb12e225902a24d29b55fe18dd6fcb2838a76"},
-    {file = "cryptography-35.0.0-pp37-pypy37_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:22a38e96118a4ce3b97509443feace1d1011d0571fae81fc3ad35f25ba3ea999"},
-    {file = "cryptography-35.0.0-pp37-pypy37_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:eb80e8a1f91e4b7ef8b33041591e6d89b2b8e122d787e87eeb2b08da71bb16ad"},
-    {file = "cryptography-35.0.0-pp37-pypy37_pp73-manylinux_2_24_x86_64.whl", hash = "sha256:abb5a361d2585bb95012a19ed9b2c8f412c5d723a9836418fab7aaa0243e67d2"},
-    {file = "cryptography-35.0.0-pp37-pypy37_pp73-win_amd64.whl", hash = "sha256:1ed82abf16df40a60942a8c211251ae72858b25b7421ce2497c2eb7a1cee817c"},
-    {file = "cryptography-35.0.0.tar.gz", hash = "sha256:9933f28f70d0517686bd7de36166dda42094eac49415459d9bdf5e7df3e0086d"},
+    {file = "cryptography-36.0.0-cp36-abi3-macosx_10_10_universal2.whl", hash = "sha256:9511416e85e449fe1de73f7f99b21b3aa04fba4c4d335d30c486ba3756e3a2a6"},
+    {file = "cryptography-36.0.0-cp36-abi3-macosx_10_10_x86_64.whl", hash = "sha256:97199a13b772e74cdcdb03760c32109c808aff7cd49c29e9cf4b7754bb725d1d"},
+    {file = "cryptography-36.0.0-cp36-abi3-macosx_11_0_arm64.whl", hash = "sha256:494106e9cd945c2cadfce5374fa44c94cfadf01d4566a3b13bb487d2e6c7959e"},
+    {file = "cryptography-36.0.0-cp36-abi3-manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:6fbbbb8aab4053fa018984bb0e95a16faeb051dd8cca15add2a27e267ba02b58"},
+    {file = "cryptography-36.0.0-cp36-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.manylinux_2_24_aarch64.whl", hash = "sha256:684993ff6f67000a56454b41bdc7e015429732d65a52d06385b6e9de6181c71e"},
+    {file = "cryptography-36.0.0-cp36-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:4c702855cd3174666ef0d2d13dcc879090aa9c6c38f5578896407a7028f75b9f"},
+    {file = "cryptography-36.0.0-cp36-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:d91bc9f535599bed58f6d2e21a2724cb0c3895bf41c6403fe881391d29096f1d"},
+    {file = "cryptography-36.0.0-cp36-abi3-manylinux_2_24_x86_64.whl", hash = "sha256:b17d83b3d1610e571fedac21b2eb36b816654d6f7496004d6a0d32f99d1d8120"},
+    {file = "cryptography-36.0.0-cp36-abi3-musllinux_1_1_aarch64.whl", hash = "sha256:8982c19bb90a4fa2aad3d635c6d71814e38b643649b4000a8419f8691f20ac44"},
+    {file = "cryptography-36.0.0-cp36-abi3-musllinux_1_1_x86_64.whl", hash = "sha256:24469d9d33217ffd0ce4582dfcf2a76671af115663a95328f63c99ec7ece61a4"},
+    {file = "cryptography-36.0.0-cp36-abi3-win32.whl", hash = "sha256:f6a5a85beb33e57998dc605b9dbe7deaa806385fdf5c4810fb849fcd04640c81"},
+    {file = "cryptography-36.0.0-cp36-abi3-win_amd64.whl", hash = "sha256:2deab5ec05d83ddcf9b0916319674d3dae88b0e7ee18f8962642d3cde0496568"},
+    {file = "cryptography-36.0.0-pp37-pypy37_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:2049f8b87f449fc6190350de443ee0c1dd631f2ce4fa99efad2984de81031681"},
+    {file = "cryptography-36.0.0-pp37-pypy37_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:a776bae1629c8d7198396fd93ec0265f8dd2341c553dc32b976168aaf0e6a636"},
+    {file = "cryptography-36.0.0-pp37-pypy37_pp73-manylinux_2_24_x86_64.whl", hash = "sha256:aa94d617a4cd4cdf4af9b5af65100c036bce22280ebb15d8b5262e8273ebc6ba"},
+    {file = "cryptography-36.0.0-pp38-pypy38_pp73-macosx_10_10_x86_64.whl", hash = "sha256:5c49c9e8fb26a567a2b3fa0343c89f5d325447956cc2fc7231c943b29a973712"},
+    {file = "cryptography-36.0.0-pp38-pypy38_pp73-manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:ef216d13ac8d24d9cd851776662f75f8d29c9f2d05cdcc2d34a18d32463a9b0b"},
+    {file = "cryptography-36.0.0-pp38-pypy38_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:231c4a69b11f6af79c1495a0e5a85909686ea8db946935224b7825cfb53827ed"},
+    {file = "cryptography-36.0.0-pp38-pypy38_pp73-manylinux_2_24_x86_64.whl", hash = "sha256:f92556f94e476c1b616e6daec5f7ddded2c082efa7cee7f31c7aeda615906ed8"},
+    {file = "cryptography-36.0.0-pp38-pypy38_pp73-win_amd64.whl", hash = "sha256:d73e3a96c38173e0aa5646c31bf8473bc3564837977dd480f5cbeacf1d7ef3a3"},
+    {file = "cryptography-36.0.0.tar.gz", hash = "sha256:52f769ecb4ef39865719aedc67b4b7eae167bafa48dbc2a26dd36fa56460507f"},
 ]
 decorator = [
     {file = "decorator-5.1.0-py3-none-any.whl", hash = "sha256:7b12e7c3c6ab203a29e157335e9122cb03de9ab7264b137594103fd4a683b374"},
@@ -1678,8 +1696,8 @@ dparse = [
     {file = "dparse-0.5.1.tar.gz", hash = "sha256:a1b5f169102e1c894f9a7d5ccf6f9402a836a5d24be80a986c7ce9eaed78f367"},
 ]
 filelock = [
-    {file = "filelock-3.3.2-py3-none-any.whl", hash = "sha256:bb2a1c717df74c48a2d00ed625e5a66f8572a3a30baacb7657add1d7bac4097b"},
-    {file = "filelock-3.3.2.tar.gz", hash = "sha256:7afc856f74fa7006a289fd10fa840e1eebd8bbff6bffb69c26c54a0512ea8cf8"},
+    {file = "filelock-3.4.0-py3-none-any.whl", hash = "sha256:2e139a228bcf56dd8b2274a65174d005c4a6b68540ee0bdbb92c76f43f29f7e8"},
+    {file = "filelock-3.4.0.tar.gz", hash = "sha256:93d512b32a23baf4cac44ffd72ccf70732aeff7b8050fcaf6d3ec406d954baf4"},
 ]
 flask = [
     {file = "Flask-1.1.4-py2.py3-none-any.whl", hash = "sha256:c34f04500f2cbbea882b1acb02002ad6fe6b7ffa64a6164577995657f50aed22"},
@@ -1697,13 +1715,17 @@ gitpython = [
     {file = "GitPython-3.1.24-py3-none-any.whl", hash = "sha256:dc0a7f2f697657acc8d7f89033e8b1ea94dd90356b2983bca89dc8d2ab3cc647"},
     {file = "GitPython-3.1.24.tar.gz", hash = "sha256:df83fdf5e684fef7c6ee2c02fc68a5ceb7e7e759d08b694088d0cacb4eba59e5"},
 ]
+gunicorn = [
+    {file = "gunicorn-20.1.0-py3-none-any.whl", hash = "sha256:9dcc4547dbb1cb284accfb15ab5667a0e5d1881cc443e0677b4882a4067a807e"},
+    {file = "gunicorn-20.1.0.tar.gz", hash = "sha256:e0a968b5ba15f8a328fdfd7ab1fcb5af4470c28aaf7e55df02a99bc13138e6e8"},
+]
 html5lib = [
     {file = "html5lib-1.1-py2.py3-none-any.whl", hash = "sha256:0d78f8fde1c230e99fe37986a60526d7049ed4bf8a9fadbad5f00e22e58e041d"},
     {file = "html5lib-1.1.tar.gz", hash = "sha256:b2e5b40261e20f354d198eae92afc10d750afb487ed5e50f9c4eaf07c184146f"},
 ]
 identify = [
-    {file = "identify-2.3.5-py2.py3-none-any.whl", hash = "sha256:ba945bddb4322394afcf3f703fa68eda08a6acc0f99d9573eb2be940aa7b9bba"},
-    {file = "identify-2.3.5.tar.gz", hash = "sha256:6f0368ba0f21c199645a331beb7425d5374376e71bc149e9cb55e45cb45f832d"},
+    {file = "identify-2.4.0-py2.py3-none-any.whl", hash = "sha256:eba31ca80258de6bb51453084bff4a923187cd2193b9c13710f2516ab30732cc"},
+    {file = "identify-2.4.0.tar.gz", hash = "sha256:a33ae873287e81651c7800ca309dc1f84679b763c9c8b30680e16fbfa82f0107"},
 ]
 idna = [
     {file = "idna-3.3-py3-none-any.whl", hash = "sha256:84d9dd047ffa80596e0f246e2eab0b391788b0503584e8945f2368256d2735ff"},
@@ -1734,8 +1756,8 @@ itsdangerous = [
     {file = "itsdangerous-1.1.0.tar.gz", hash = "sha256:321b033d07f2a4136d3ec762eac9f16a10ccd60f53c0c91af90217ace7ba1f19"},
 ]
 jedi = [
-    {file = "jedi-0.18.0-py2.py3-none-any.whl", hash = "sha256:18456d83f65f400ab0c2d3319e48520420ef43b23a086fdc05dff34132f0fb93"},
-    {file = "jedi-0.18.0.tar.gz", hash = "sha256:92550a404bad8afed881a137ec9a461fed49eca661414be45059329614ed0707"},
+    {file = "jedi-0.18.1-py2.py3-none-any.whl", hash = "sha256:637c9635fcf47945ceb91cd7f320234a7be540ded6f3e99a50cb6febdfd1ba8d"},
+    {file = "jedi-0.18.1.tar.gz", hash = "sha256:74137626a64a99c8eb6ae5832d99b3bdd7d29a3850fe2aa80a4126b2a7d949ab"},
 ]
 jeepney = [
     {file = "jeepney-0.7.1-py3-none-any.whl", hash = "sha256:1b5a0ea5c0e7b166b2f5895b91a08c14de8915afda4407fb5022a195224958ac"},
@@ -1973,8 +1995,8 @@ pathspec = [
     {file = "pathspec-0.9.0.tar.gz", hash = "sha256:e564499435a2673d586f6b2130bb5b95f04a3ba06f81b8f895b651a3c76aabb1"},
 ]
 pbr = [
-    {file = "pbr-5.7.0-py2.py3-none-any.whl", hash = "sha256:60002958e459b195e8dbe61bf22bcf344eedf1b4e03a321a5414feb15566100c"},
-    {file = "pbr-5.7.0.tar.gz", hash = "sha256:4651ca1445e80f2781827305de3d76b3ce53195f2227762684eb08f17bc473b7"},
+    {file = "pbr-5.8.0-py2.py3-none-any.whl", hash = "sha256:176e8560eaf61e127817ef93d8a844803abb27a4d4637f0ff3bb783129be2e0a"},
+    {file = "pbr-5.8.0.tar.gz", hash = "sha256:672d8ebee84921862110f23fcec2acea191ef58543d34dfe9ef3d9f13c31cddf"},
 ]
 peewee = [
     {file = "peewee-3.14.8.tar.gz", hash = "sha256:01bd7f734defb08d7a3346a0c0ca7011bc8d0d685934ec0e001b3371d522ec53"},
@@ -2031,8 +2053,8 @@ pillow = [
     {file = "Pillow-8.4.0.tar.gz", hash = "sha256:b8e2f83c56e141920c39464b852de3719dfbfb6e3c99a2d8da0edf4fb33176ed"},
 ]
 pkginfo = [
-    {file = "pkginfo-1.7.1-py2.py3-none-any.whl", hash = "sha256:37ecd857b47e5f55949c41ed061eb51a0bee97a87c969219d144c0e023982779"},
-    {file = "pkginfo-1.7.1.tar.gz", hash = "sha256:e7432f81d08adec7297633191bbf0bd47faf13cd8724c3a13250e51d542635bd"},
+    {file = "pkginfo-1.8.1-py2.py3-none-any.whl", hash = "sha256:bb55a6c017d50f2faea5153abc7b05a750e7ea7ae2cbb7fb3ad6f1dcf8d40988"},
+    {file = "pkginfo-1.8.1.tar.gz", hash = "sha256:65175ffa2c807220673a41c371573ac9a1ea1b19ffd5eef916278f428319934f"},
 ]
 platformdirs = [
     {file = "platformdirs-2.4.0-py3-none-any.whl", hash = "sha256:8868bbe3c3c80d42f20156f22e7131d2fb321f5bc86a2a345375c6481a67021d"},
@@ -2335,9 +2357,8 @@ typed-ast = [
     {file = "typed_ast-1.4.3.tar.gz", hash = "sha256:fb1bbeac803adea29cedd70781399c99138358c26d05fcbd23c13016b7f5ec65"},
 ]
 typing-extensions = [
-    {file = "typing_extensions-3.10.0.2-py2-none-any.whl", hash = "sha256:d8226d10bc02a29bcc81df19a26e56a9647f8b0a6d4a83924139f4a8b01f17b7"},
-    {file = "typing_extensions-3.10.0.2-py3-none-any.whl", hash = "sha256:f1d25edafde516b146ecd0613dabcc61409817af4766fbbcfb8d1ad4ec441a34"},
-    {file = "typing_extensions-3.10.0.2.tar.gz", hash = "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e"},
+    {file = "typing_extensions-4.0.0-py3-none-any.whl", hash = "sha256:829704698b22e13ec9eaf959122315eabb370b0884400e9818334d8b677023d9"},
+    {file = "typing_extensions-4.0.0.tar.gz", hash = "sha256:2cdf80e4e04866a9b3689a51869016d36db0814d84b8d8a568d22781d45d27ed"},
 ]
 urllib3 = [
     {file = "urllib3-1.26.7-py2.py3-none-any.whl", hash = "sha256:c4fdf4019605b6e5423637e01bc9fe4daef873709a7973e195ceba0a62bbc844"},
diff --git a/pyproject.toml b/pyproject.toml
index 8ce4aba..e09f0b9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,10 +43,14 @@ kodak = "kodak.cli:main"
 python = "^3.7"
 flask = "^1.1.2"
 flask-restful = "^0.3.8"
+gunicorn = {version = "^20.1.0", optional = true}
 peewee = "^3.13.3"
 Pillow = "^8.3.2"
 "ruamel.yaml" = "^0.16.12"
 
+[tool.poetry.extras]
+deployment = ["gunicorn"]
+
 [tool.poetry.dev-dependencies]
 bandit = "^1.6.2"
 black = "^21.4b2"