Script documentation
Update manager-quantity

* Error dialogs
* Documentation
invert-colors: add no-redraw option
load-screen: Add focus path
options-menu: Initial script
Clean up paintKeyString() calls
Expand backup filter
load-screen: Clarify backup labels
Show warning when attempting to copy save
load-screen: Add usage/version information
Add version-bump.py
Automatically commit version bumps
Update load-screen backup format

Fixes #1
Bump load-screen to 0.8.1
load-screen: Initial mouse support (lower controls only)
Add changelogs/
Update load-screen.md
Update README.rst
Markdown -> RST
Update usage/version info