diff --git a/Pipfile.lock b/Pipfile.lock
index 1d6945d..0d5bfb7 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -142,11 +142,11 @@
     "develop": {
         "backports.entry-points-selectable": {
             "hashes": [
-                "sha256:988468260ec1c196dab6ae1149260e2f5472c9110334e5d51adcb77867361f6a",
-                "sha256:a6d9a871cde5e15b4c4a53e3d43ba890cc6861ec1332c9c2428c92f977192acc"
+                "sha256:7fceed9532a7aa2bd888654a7314f864a3c16a4e710b34a58cfc0f08114c663b",
+                "sha256:914b21a479fde881635f7af5adc7f6e38d6b274be32269070c53b698c60d5386"
             ],
             "markers": "python_version >= '2.7'",
-            "version": "==1.1.0"
+            "version": "==1.1.1"
         },
         "bleach": {
             "hashes": [
@@ -330,19 +330,19 @@
         },
         "docutils": {
             "hashes": [
-                "sha256:686577d2e4c32380bb50cbb22f575ed742d58168cee37e99117a854bcd88f125",
-                "sha256:cf316c8370a737a022b72b56874f6602acf974a37a9fba42ec2876387549fc61"
+                "sha256:a31688b2ea858517fa54293e5d5df06fbb875fb1f7e4c64529271b77781ca8fc",
+                "sha256:c1d5dab2b11d16397406a282e53953fe495a46d69ae329f55aa98a5c4e3c5fbb"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
-            "version": "==0.17.1"
+            "version": "==0.18"
         },
         "filelock": {
             "hashes": [
-                "sha256:8c7eab13dc442dc249e95158bcc12dec724465919bdc9831fdbf0660f03d1785",
-                "sha256:bbc6a0382fe8ec4744ecdf6683a2e07f65eb10ff1aff53fc02a202565446cde0"
+                "sha256:7afc856f74fa7006a289fd10fa840e1eebd8bbff6bffb69c26c54a0512ea8cf8",
+                "sha256:bb2a1c717df74c48a2d00ed625e5a66f8572a3a30baacb7657add1d7bac4097b"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==3.3.0"
+            "version": "==3.3.2"
         },
         "flake8": {
             "hashes": [
@@ -362,11 +362,11 @@
         },
         "importlib-metadata": {
             "hashes": [
-                "sha256:b618b6d2d5ffa2f16add5697cf57a46c76a56229b0ed1c438322e4e95645bd15",
-                "sha256:f284b3e11256ad1e5d03ab86bb2ccd6f5339688ff17a4d797a0fe7df326f23b1"
+                "sha256:53ccfd5c134223e497627b9815d5030edf77d2ed573922f7a0b8f8bb81a1c100",
+                "sha256:75bdec14c397f528724c1bfd9709d660b33a4d2e77387a3358f20b848bb5e5fb"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==4.8.1"
+            "version": "==4.8.2"
         },
         "jeepney": {
             "hashes": [
@@ -401,11 +401,11 @@
         },
         "packaging": {
             "hashes": [
-                "sha256:7dc96269f53a4ccec5c0670940a4281106dd0bb343f47b7471f779df49c2fbe7",
-                "sha256:c86254f9220d55e31cc94d69bade760f0847da8000def4dfe1c6b872fd14ff14"
+                "sha256:096d689d78ca690e4cd8a89568ba06d07ca097e3306a4381635073ca91479966",
+                "sha256:14317396d1e8cdb122989b916fa2c7e9ca8e2be9e8060a6eff75b6b7b4d8a7e0"
             ],
             "markers": "python_version >= '3.6'",
-            "version": "==21.0"
+            "version": "==21.2"
         },
         "pkginfo": {
             "hashes": [
@@ -432,11 +432,11 @@
         },
         "py": {
             "hashes": [
-                "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3",
-                "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"
+                "sha256:51c75c4126074b472f746a24399ad32f6053d1b34b68d2fa41e558e6f4a98719",
+                "sha256:607c53218732647dff4acdfcd50cb62615cedf612e72d1724fb1a0cc6405b378"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==1.10.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==1.11.0"
         },
         "pycodestyle": {
             "hashes": [
@@ -448,11 +448,11 @@
         },
         "pycparser": {
             "hashes": [
-                "sha256:2d475327684562c3a96cc71adf7dc8c4f0565175cf86b6d7a404ff4c771f15f0",
-                "sha256:7582ad22678f0fcd81102833f60ef8d0e57288b6b5fb00323d101be910e35705"
+                "sha256:8ee45429555515e1f6b185e78100aea234072576aa43ab53aefcae078162fca9",
+                "sha256:e644fdec12f7872f86c58ff790da456218b10f863970249516d60a5eaca77206"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.20"
+            "version": "==2.21"
         },
         "pydocstyle": {
             "hashes": [
@@ -564,11 +564,11 @@
         },
         "twine": {
             "hashes": [
-                "sha256:087328e9bb405e7ce18527a2dca4042a84c7918658f951110b38bc135acab218",
-                "sha256:4caec0f1ed78dc4c9b83ad537e453d03ce485725f2aea57f1bb3fdde78dae936"
+                "sha256:4caad5ef4722e127b3749052fcbffaaf71719b19d4fd4973b29c469957adeba2",
+                "sha256:916070f8ecbd1985ebed5dbb02b9bda9a092882a96d7069d542d4fc0bb5c673c"
             ],
             "index": "pypi",
-            "version": "==3.4.2"
+            "version": "==3.6.0"
         },
         "urllib3": {
             "hashes": [
@@ -580,11 +580,11 @@
         },
         "virtualenv": {
             "hashes": [
-                "sha256:10062e34c204b5e4ec5f62e6ef2473f8ba76513a9a617e873f1f8fb4a519d300",
-                "sha256:bcc17f0b3a29670dd777d6f0755a4c04f28815395bca279cdcb213b97199a6b8"
+                "sha256:4b02e52a624336eece99c96e3ab7111f469c24ba226a53ec474e8e787b365814",
+                "sha256:576d05b46eace16a9c348085f7d0dc8ef28713a2cabaa1cf0aea41e8f12c9218"
             ],
             "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
-            "version": "==20.8.1"
+            "version": "==20.10.0"
         },
         "webencodings": {
             "hashes": [