A blender extension/addon to preview and create procedural bones for the source engine.
Download the latest extension/addon and just add it to your extension/addon list in blender!
A simple issue request goes a long way so please do say if you find anything wrong.
Using the Blender Development extensions to debug and develop the extension with autopep8 for formatting.
With autopep8 the max line length is 160 with --max-line-length 160.