diff --git a/Pipfile.lock b/Pipfile.lock
index f3f73bf..8db432f 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -20,91 +20,81 @@
         },
         "numpy": {
             "hashes": [
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-            "version": "==1.15.4"
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-            "version": "==2.7.5"
+            "version": "==2.8.1"
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         "pytz": {
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-            "version": "==2018.7"
+            "version": "==2021.1"
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         "six": {
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     "develop": {
@@ -117,117 +107,142 @@
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@@ -238,108 +253,126 @@
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@@ -369,45 +402,39 @@
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@@ -418,78 +445,85 @@
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-            "version": "==2.19"
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@@ -501,57 +535,56 @@
         },
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-            "version": "==2.7.5"
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+            "version": "==2021.1"
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-            "version": "==0.8.0"
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@@ -561,21 +594,26 @@
             "index": "pypi",
             "version": "==1.8.2"
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+        "sphinxcontrib-serializinghtml": {
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@@ -587,11 +625,10 @@
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