Begin full class documentation
Add metaclass to facilitate inheritance of docstrings...

which helps with the good ol' "Do not repeat yourself" philosophy. Which means
that we don't repeat ourselves. Repeating ourselves is a thing won't do.
Fix doc references to keyboard combinations to have correct markup
Fix name of ParameterizingFormatPlacholder
Add more detailed documentation to formatting.py
Document formatting.py in custom order, which is more logical
Add FIXMEs for docstrings that need finishing in formatting.py...

can you tell I'm getting bored of documentation?