diff --git a/Pipfile.lock b/Pipfile.lock
index 28adeb3..2ef3090 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -35,26 +35,17 @@
     "develop": {
         "atomicwrites": {
             "hashes": [
-                "sha256:0312ad34fcad8fac3704d441f7b317e50af620823353ec657a53e981f92920c0",
-                "sha256:ec9ae8adaae229e4f8446952d204a3e4b5fdd2d099f9be3aaf556120135fb3ee"
+                "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197",
+                "sha256:ae70396ad1a434f9c7046fd2dd196fc04b12f9e91ffb859164193be8b6168a7a"
             ],
-            "markers": "python_version >= '2.7' and python_version != '3.1.*' and python_version != '3.0.*' and python_version != '3.2.*' and python_version != '3.3.*'",
-            "version": "==1.2.1"
+            "version": "==1.4.0"
         },
         "attrs": {
             "hashes": [
-                "sha256:10cbf6e27dbce8c30807caf056c8eb50917e0eaafe86347671b57254006c3e69",
-                "sha256:ca4be454458f9dec299268d472aaa5a11f67a4ff70093396e1ceae9c76cf4bbb"
+                "sha256:31b2eced602aa8423c2aea9c76a724617ed67cf9513173fd3a4f03e3a929c7e6",
+                "sha256:832aa3cde19744e49938b91fea06d69ecb9e649c93ba974535d08ad92164f700"
             ],
-            "version": "==18.2.0"
-        },
-        "colorama": {
-            "hashes": [
-                "sha256:463f8483208e921368c9f306094eb6f725c6ca42b0f97e313cb5d5512459feda",
-                "sha256:48eb22f4f8461b1df5734a074b57042430fb06e1d61bd1e11b078c0fe6d7a1f1"
-            ],
-            "markers": "sys_platform == 'win32'",
-            "version": "==0.3.9"
+            "version": "==20.3.0"
         },
         "hypothesis": {
             "hashes": [
@@ -65,37 +56,43 @@
             "index": "pypi",
             "version": "==3.71.10"
         },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:b8de9eff2b35fb037368f28a7df1df4e6436f578fa74423505b6c6a778d5b5dd",
+                "sha256:c2d6341ff566f609e89a2acb2db190e5e1d23d5409d6cc8d2fe34d72443876d4"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==2.1.1"
+        },
         "more-itertools": {
             "hashes": [
-                "sha256:c187a73da93e7a8acc0001572aebc7e3c69daf7bf6881a2cea10650bd4420092",
-                "sha256:c476b5d3a34e12d40130bc2f935028b5f636df8f372dc2c1c01dc19681b2039e",
-                "sha256:fcbfeaea0be121980e15bc97b3817b5202ca73d0eae185b4550cbfce2a3ebb3d"
+                "sha256:5652a9ac72209ed7df8d9c15daf4e1aa0e3d2ccd3c87f8265a0673cd9cbc9ced",
+                "sha256:c5d6da9ca3ff65220c3bfd2a8db06d698f05d4d2b9be57e1deb2be5a45019713"
             ],
-            "version": "==4.3.0"
+            "version": "==8.7.0"
         },
         "pathlib2": {
             "hashes": [
-                "sha256:8eb170f8d0d61825e09a95b38be068299ddeda82f35e96c3301a8a5e7604cb83",
-                "sha256:d1aa2a11ba7b8f7b21ab852b1fb5afb277e1bb99d5dfc663380b5015c0d80c5a"
+                "sha256:0ec8205a157c80d7acc301c0b18fbd5d44fe655968f5d947b6ecef5290fc35db",
+                "sha256:6cd9a47b597b37cc57de1c05e56fb1a1c9cc9fab04fe78c29acd090418529868"
             ],
             "markers": "python_version < '3.6'",
-            "version": "==2.3.2"
+            "version": "==2.3.5"
         },
         "pluggy": {
             "hashes": [
-                "sha256:6e3836e39f4d36ae72840833db137f7b7d35105079aee6ec4a62d9f80d594dd1",
-                "sha256:95eb8364a4708392bae89035f45341871286a333f749c3141c20573d2b3876e1"
+                "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0",
+                "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"
             ],
-            "markers": "python_version >= '2.7' and python_version != '3.1.*' and python_version != '3.0.*' and python_version != '3.2.*' and python_version != '3.3.*'",
-            "version": "==0.7.1"
+            "version": "==0.13.1"
         },
         "py": {
             "hashes": [
-                "sha256:06a30435d058473046be836d3fc4f27167fd84c45b99704f2fb5509ef61f9af1",
-                "sha256:50402e9d1c9005d759426988a492e0edaadb7f4e68bcddfea586bc7432d009c6"
+                "sha256:21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3",
+                "sha256:3b80836aa6d1feeaa108e046da6423ab8f6ceda6468545ae8d02d9d58d18818a"
             ],
-            "markers": "python_version >= '2.7' and python_version != '3.1.*' and python_version != '3.0.*' and python_version != '3.2.*' and python_version != '3.3.*'",
-            "version": "==1.6.0"
+            "index": "pypi",
+            "version": "==1.10.0"
         },
         "pytest": {
             "hashes": [
@@ -107,10 +104,17 @@
         },
         "six": {
             "hashes": [
-                "sha256:70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9",
-                "sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb"
+                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
+                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+            ],
+            "version": "==1.15.0"
+        },
+        "zipp": {
+            "hashes": [
+                "sha256:c70410551488251b0fee67b460fb9a536af8d6f9f008ad10ac51f615b6a521b1",
+                "sha256:e0d9e63797e483a30d27e09fffd308c59a700d365ec34e93cc100844168bf921"
             ],
-            "version": "==1.11.0"
+            "version": "==1.2.0"
         }
     }
 }