Added 'local textadept = _G.textadept' to all Lua modules, themes, etc.
Added more locals to core/ext/keys.lua for speed improvement.
Reformatted some Lua modules to the earlier standard committed.
Now editing core/events.lua's buffer_new handler function is no longer necessary
on a per-user basis. If _THEME is set, that theme's buffer.lua is loaded for a
'buffer_new' event, and view.lua for 'view_new'.