diff --git a/Pipfile.lock b/Pipfile.lock
index 733e39f..f3be32d 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -18,10 +18,10 @@
     "default": {
         "certifi": {
             "hashes": [
-                "sha256:59b7658e26ca9c7339e00f8f4636cdfe59d34fa37b9b04f6f9e9926b3cece1a5",
-                "sha256:b26104d6835d1f5e49452a26eb2ff87fe7090b89dfcaee5ea2212697e1e1d7ae"
+                "sha256:1a4995114262bffbc2413b159f2a1a480c969de6e6eb13ee966d470af86af59c",
+                "sha256:719a74fb9e33b9bd44cc7f3a8d94bc35e4049deebe19ba7d8e108280cfd59830"
             ],
-            "version": "==2019.3.9"
+            "version": "==2020.12.5"
         },
         "chardet": {
             "hashes": [
@@ -47,33 +47,42 @@
         },
         "urllib3": {
             "hashes": [
-                "sha256:b246607a25ac80bedac05c6f282e3cdaf3afb65420fd024ac94435cabe6e18d1",
-                "sha256:dbe59173209418ae49d485b87d1681aefa36252ee85884c31346debd19463232"
+                "sha256:2f3db8b19923a873b3e5256dc9c2dedfa883e33d87c690d9c7913e1f40673cdc",
+                "sha256:87716c2d2a7121198ebcb7ce7cccf6ce5e9ba539041cfbaeecfb641dc0bf6acc"
             ],
-            "version": "==1.25.3"
+            "index": "pypi",
+            "version": "==1.25.8"
         }
     },
     "develop": {
         "atomicwrites": {
             "hashes": [
-                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
-                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
+                "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197",
+                "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"
             ],
-            "version": "==1.3.0"
+            "version": "==1.4.0"
         },
         "attrs": {
             "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
+                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
+                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
             ],
-            "version": "==19.1.0"
+            "version": "==20.3.0"
+        },
+        "backports.functools-lru-cache": {
+            "hashes": [
+                "sha256:d5ed2169378b67d3c545e5600d363a923b09c456dab1593914935a68ad478271",
+                "sha256:dbead04b9daa817909ec64e8d2855fb78feafe0b901d4568758e3a60559d8978"
+            ],
+            "markers": "python_version < '3.2'",
+            "version": "==1.6.4"
         },
         "certifi": {
             "hashes": [
-                "sha256:59b7658e26ca9c7339e00f8f4636cdfe59d34fa37b9b04f6f9e9926b3cece1a5",
-                "sha256:b26104d6835d1f5e49452a26eb2ff87fe7090b89dfcaee5ea2212697e1e1d7ae"
+                "sha256:1a4995114262bffbc2413b159f2a1a480c969de6e6eb13ee966d470af86af59c",
+                "sha256:719a74fb9e33b9bd44cc7f3a8d94bc35e4049deebe19ba7d8e108280cfd59830"
             ],
-            "version": "==2019.3.9"
+            "version": "==2020.12.5"
         },
         "chardet": {
             "hashes": [
@@ -82,6 +91,30 @@
             ],
             "version": "==3.0.4"
         },
+        "configparser": {
+            "hashes": [
+                "sha256:254c1d9c79f60c45dfde850850883d5aaa7f19a23f13561243a050d5a7c3fe4c",
+                "sha256:c7d282687a5308319bf3d2e7706e575c635b0a470342641c93bea0ea3b5331df"
+            ],
+            "markers": "python_version < '3'",
+            "version": "==4.0.2"
+        },
+        "contextlib2": {
+            "hashes": [
+                "sha256:01f490098c18b19d2bd5bb5dc445b2054d2fa97f09a4280ba2c5f3c394c8162e",
+                "sha256:3355078a159fbb44ee60ea80abd0d87b80b78c248643b49aa6d94673b413609b"
+            ],
+            "markers": "python_version < '3'",
+            "version": "==0.6.0.post1"
+        },
+        "funcsigs": {
+            "hashes": [
+                "sha256:330cc27ccbf7f1e992e69fef78261dc7c6569012cf397db8d3de0234e6c937ca",
+                "sha256:a7bb0f2cf3a3fd1ab2732cb49eba4252c2af4240442415b4abce3b87022a8f50"
+            ],
+            "markers": "python_version < '3.0'",
+            "version": "==1.0.2"
+        },
         "idna": {
             "hashes": [
                 "sha256:c357b3f628cf53ae2c4c05627ecc484553142ca23264e593d327bcde5e9c3407",
@@ -91,46 +124,56 @@
         },
         "importlib-metadata": {
             "hashes": [
-                "sha256:6dfd58dfe281e8d240937776065dd3624ad5469c835248219bd16cf2e12dbeb7",
-                "sha256:cb6ee23b46173539939964df59d3d72c3e0c1b5d54b84f1d8a7e912fe43612db"
+                "sha256:b8de9eff2b35fb037368f28a7df1df4e6436f578fa74423505b6c6a778d5b5dd",
+                "sha256:c2d6341ff566f609e89a2acb2db190e5e1d23d5409d6cc8d2fe34d72443876d4"
             ],
-            "version": "==0.18"
+            "markers": "python_version < '3.8'",
+            "version": "==2.1.1"
         },
         "more-itertools": {
             "hashes": [
-                "sha256:2112d2ca570bb7c3e53ea1a35cd5df42bb0fd10c45f0fb97178679c3c03d64c7",
-                "sha256:c3e4748ba1aad8dba30a4886b0b1a2004f9a863837b8654e7059eebf727afa5a"
+                "sha256:38a936c0a6d98a38bcc2d03fdaaedaba9f412879461dd2ceff8d37564d6522e4",
+                "sha256:c0a5785b1109a6bd7fac76d6837fd1feca158e54e521ccd2ae8bfe393cc9d4fc",
+                "sha256:fe7a7cae1ccb57d33952113ff4fa1bc5f879963600ed74918f1236e212ee50b9"
             ],
-            "markers": "python_version > '2.7'",
-            "version": "==7.0.0"
+            "markers": "python_version <= '2.7'",
+            "version": "==5.0.0"
         },
         "packaging": {
             "hashes": [
-                "sha256:0c98a5d0be38ed775798ece1b9727178c4469d9c3b4ada66e8e6b7849f8732af",
-                "sha256:9e1cbf8c12b1f1ce0bb5344b8d7ecf66a6f8a6e91bcb0c84593ed6d3ab5c4ab3"
+                "sha256:5b327ac1320dc863dca72f4514ecc086f31186744b84a230374cc1fd776feae5",
+                "sha256:67714da7f7bc052e064859c05c595155bd1ee9f69f76557e21f051443c20947a"
+            ],
+            "version": "==20.9"
+        },
+        "pathlib2": {
+            "hashes": [
+                "sha256:0ec8205a157c80d7acc301c0b18fbd5d44fe655968f5d947b6ecef5290fc35db",
+                "sha256:6cd9a47b597b37cc57de1c05e56fb1a1c9cc9fab04fe78c29acd090418529868"
             ],
-            "version": "==19.0"
+            "markers": "python_version < '3'",
+            "version": "==2.3.5"
         },
         "pluggy": {
             "hashes": [
-                "sha256:0825a152ac059776623854c1543d65a4ad408eb3d33ee114dff91e57ec6ae6fc",
-                "sha256:b9817417e95936bf75d85d3f8767f7df6cdde751fc40aed3bb3074cbcb77757c"
+                "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0",
+                "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"
             ],
-            "version": "==0.12.0"
+            "version": "==0.13.1"
         },
         "py": {
             "hashes": [
-                "sha256:64f65755aee5b381cea27766a3a147c3f15b9b6b9ac88676de66ba2ae36793fa",
-                "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"
+                "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3",
+                "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"
             ],
-            "version": "==1.8.0"
+            "version": "==1.10.0"
         },
         "pyparsing": {
             "hashes": [
-                "sha256:1873c03321fc118f4e9746baf201ff990ceb915f433f23b395f5580d1840cb2a",
-                "sha256:9b6323ef4ab914af344ba97510e966d64ba91055d6b9afa6b30799340e89cc03"
+                "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",
+                "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"
             ],
-            "version": "==2.4.0"
+            "version": "==2.4.7"
         },
         "pytest": {
             "hashes": [
@@ -156,33 +199,51 @@
             "index": "pypi",
             "version": "==1.6.0"
         },
+        "scandir": {
+            "hashes": [
+                "sha256:2586c94e907d99617887daed6c1d102b5ca28f1085f90446554abf1faf73123e",
+                "sha256:2ae41f43797ca0c11591c0c35f2f5875fa99f8797cb1a1fd440497ec0ae4b022",
+                "sha256:2b8e3888b11abb2217a32af0766bc06b65cc4a928d8727828ee68af5a967fa6f",
+                "sha256:2c712840c2e2ee8dfaf36034080108d30060d759c7b73a01a52251cc8989f11f",
+                "sha256:4d4631f6062e658e9007ab3149a9b914f3548cb38bfb021c64f39a025ce578ae",
+                "sha256:67f15b6f83e6507fdc6fca22fedf6ef8b334b399ca27c6b568cbfaa82a364173",
+                "sha256:7d2d7a06a252764061a020407b997dd036f7bd6a175a5ba2b345f0a357f0b3f4",
+                "sha256:8c5922863e44ffc00c5c693190648daa6d15e7c1207ed02d6f46a8dcc2869d32",
+                "sha256:92c85ac42f41ffdc35b6da57ed991575bdbe69db895507af88b9f499b701c188",
+                "sha256:b24086f2375c4a094a6b51e78b4cf7ca16c721dcee2eddd7aa6494b42d6d519d",
+                "sha256:cb925555f43060a1745d0a321cca94bcea927c50114b623d73179189a4e100ac"
+            ],
+            "markers": "python_version < '3.5'",
+            "version": "==1.10.0"
+        },
         "six": {
             "hashes": [
-                "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
-                "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
+                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
+                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
             ],
-            "version": "==1.12.0"
+            "version": "==1.15.0"
         },
         "urllib3": {
             "hashes": [
-                "sha256:b246607a25ac80bedac05c6f282e3cdaf3afb65420fd024ac94435cabe6e18d1",
-                "sha256:dbe59173209418ae49d485b87d1681aefa36252ee85884c31346debd19463232"
+                "sha256:2f3db8b19923a873b3e5256dc9c2dedfa883e33d87c690d9c7913e1f40673cdc",
+                "sha256:87716c2d2a7121198ebcb7ce7cccf6ce5e9ba539041cfbaeecfb641dc0bf6acc"
             ],
-            "version": "==1.25.3"
+            "index": "pypi",
+            "version": "==1.25.8"
         },
         "wcwidth": {
             "hashes": [
-                "sha256:3df37372226d6e63e1b1e1eda15c594bca98a22d33a23832a90998faa96bc65e",
-                "sha256:f4ebe71925af7b40a864553f761ed559b43544f8f71746c2d756c7fe788ade7c"
+                "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784",
+                "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"
             ],
-            "version": "==0.1.7"
+            "version": "==0.2.5"
         },
         "zipp": {
             "hashes": [
-                "sha256:8c1019c6aad13642199fbe458275ad6a84907634cc9f0989877ccc4a2840139d",
-                "sha256:ca943a7e809cc12257001ccfb99e3563da9af99d52f261725e96dfe0f9275bc3"
+                "sha256:c70410551488251b0fee67b460fb9a536af8d6f9f008ad10ac51f615b6a521b1",
+                "sha256:e0d9e63797e483a30d27e09fffd308c59a700d365ec34e93cc100844168bf921"
             ],
-            "version": "==0.5.1"
+            "version": "==1.2.0"
         }
     }
 }
diff --git a/requirements.txt b/requirements.txt
index e94c589..68772e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
--i https://pypi.org/simple
-certifi==2019.3.9
+-i https://pypi.org/simple/
+certifi==2020.12.5
 chardet==3.0.4
 idna==2.8
 requests==2.22.0
-urllib3==1.25.3
+urllib3==1.25.8
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 8d66f46..ca799a6 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,19 +1,25 @@
--i https://pypi.org/simple
-atomicwrites==1.3.0
-attrs==19.1.0
-certifi==2019.3.9
+-i https://pypi.org/simple/
+atomicwrites==1.4.0
+attrs==20.3.0
+backports.functools-lru-cache==1.6.4 ; python_version < '3.2'
+certifi==2020.12.5
 chardet==3.0.4
+configparser==4.0.2 ; python_version < '3'
+contextlib2==0.6.0.post1 ; python_version < '3'
+funcsigs==1.0.2 ; python_version < '3.0'
 idna==2.8
-importlib-metadata==0.18
-more-itertools==7.0.0 ; python_version > '2.7'
-packaging==19.0
-pluggy==0.12.0
-py==1.8.0
-pyparsing==2.4.0
+importlib-metadata==2.1.1 ; python_version < '3.8'
+more-itertools==5.0.0 ; python_version <= '2.7'
+packaging==20.9
+pathlib2==2.3.5 ; python_version < '3'
+pluggy==0.13.1
+py==1.10.0
+pyparsing==2.4.7
 pytest==4.6.3
 requests-mock==1.6.0
 requests==2.22.0
-six==1.12.0
-urllib3==1.25.3
-wcwidth==0.1.7
-zipp==0.5.1
+scandir==1.10.0 ; python_version < '3.5'
+six==1.15.0
+urllib3==1.25.8
+wcwidth==0.2.5
+zipp==1.2.0