feat(perf): switch small character dict lookups to list

Related to #92: Fix inconsistent behaviors between winhl and namespac…

…es. These typically occur when the underlying buffer changes in a window that has a winhl

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