diff --git a/LICENSE.md b/LICENSE.md
index 29aba59..35244b0 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,13 +1,13 @@
-MIT License
+The MIT License (MIT)
 
 Copyright (C) 2020, Twilio SendGrid, Inc. <help@twilio.com>
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do
-so, subject to the following conditions:
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
diff --git a/smtpapi/__init__.py b/smtpapi/__init__.py
index 13306e6..1ed55a7 100644
--- a/smtpapi/__init__.py
+++ b/smtpapi/__init__.py
@@ -1,10 +1,5 @@
-import decimal
 import json
-import os
-
-dir_path = os.path.dirname(os.path.realpath(__file__))
-if os.path.isfile(os.path.join(dir_path, 'VERSION.txt')):
-    __version__ = open(os.path.join(dir_path, 'VERSION.txt')).read().strip()
+import decimal
 
 
 class _CustomJSONEncoder(json.JSONEncoder):
@@ -12,7 +7,8 @@ class _CustomJSONEncoder(json.JSONEncoder):
     def default(self, o):
         if isinstance(o, decimal.Decimal):
             return float(o)
-        # Provide a fallback to the default encoder if we haven't implemented special support for the object's class
+        # Provide a fallback to the default encoder if we haven't implemented
+        # special support for the object's class
         return super(_CustomJSONEncoder, self).default(o)
 
 
@@ -42,34 +38,36 @@ def add_substitution(self, key, value):
     def set_substitutions(self, subs):
         self.data['sub'] = subs
 
+    def _add_key_value(self, index, key, value):
+        if index not in self.data:
+            self.data[index] = {}
+        self.data[index][key] = value
+
+    def _add_key(self, index, key):
+        if index not in self.data:
+            self.data[index] = []
+        self.data[index].append(key)
+
     def add_unique_arg(self, key, value):
-        if 'unique_args' not in self.data:
-            self.data['unique_args'] = {}
-        self.data['unique_args'][key] = value
+        self._add_key_value('unique_args', key, value)
 
     def set_unique_args(self, value):
         self.data['unique_args'] = value
 
     def add_category(self, category):
-        if 'category' not in self.data:
-            self.data['category'] = []
-        self.data['category'].append(category)
+        self._add_key('category', category)
 
     def set_categories(self, category):
         self.data['category'] = category
 
     def add_section(self, key, section):
-        if 'section' not in self.data:
-            self.data['section'] = {}
-        self.data['section'][key] = section
+        self._add_key_value('section', key, section)
 
     def set_sections(self, value):
         self.data['section'] = value
 
     def add_send_each_at(self, time):
-        if 'send_each_at' not in self.data:
-            self.data['send_each_at'] = []
-        self.data['send_each_at'].append(time)
+        self._add_key('send_each_at', time)
 
     def set_send_each_at(self, time):
         self.data['send_each_at'] = time