Related to #88 - Blocked windows should not default to global ns

Lua: Discard vimade namespaces when switching colorscheme or backgrou…

…nd settings. This ensures that links stay in a good state.

Lua: Fix terminal match not removed when VimadeDisable used

README: Update python example install with easier recipe config

README: Reduce image size for duo.gif

Python: Fix issue with properly removing signs when batched