Remove references to Python 3.6, bump framework version

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.6
+FROM python:3.9
 
 COPY ./ /tmp/d20
 

d20/version.py

@@ -1,6 +1,6 @@
 import pkg_resources
 
-GAME_ENGINE_VERSION_RAW = "0.4.3"
+GAME_ENGINE_VERSION_RAW = "0.5.0"
 GAME_ENGINE_VERSION = pkg_resources.parse_version(GAME_ENGINE_VERSION_RAW)
 
 

docs/authoring/actions.rst

@@ -12,7 +12,7 @@ Getting Started
 ---------------
 
 Every action must be a valid python package.
-If unfamiliar with python packaging, please read python's documentation on `packaging <https://docs.python.org/3.6/tutorial/modules.html#packages>`_ for more information.
+If unfamiliar with python packaging, please read python's documentation on `packaging <https://docs.python.org/3.9/tutorial/modules.html#packages>`_ for more information.
 Note that, D20 actions only support one-level deep packages.
 If your package has nested packages, they will need to be exposed by the highest level packages.
 
@@ -63,4 +63,4 @@ Dependencies
 As external actions can implement python routines that may not be native,
 they might make use of external libraries. As such they should generally
 include a requirements file to ensure the proper libraries are installed as
-needed.
+needed.

docs/intro/installation.rst

@@ -1,8 +1,8 @@
 Installation
 ============
 
-D20 is a Python 3.6+ framework and is tested against Python 3.6 - 3.9 for compatibility.
-It is not compatible with Python 2.x or Python 3.5 and older.
+D20 is a Python 3.7+ framework and is tested against Python 3.7 - 3.10 for compatibility.
+It is not compatible with Python 2.x or Python 3.6 and older.
 Please ensure you are running a compatible version of Python.
 
 To install D20 simply, ``pip install`` the project directory
@@ -13,4 +13,4 @@ To install D20 simply, ``pip install`` the project directory
     pip install .
 
 
-This will install required python packages along with the ``d20`` and ``d20-shell`` commands.
+This will install required python packages along with the ``d20`` and ``d20-shell`` commands.