`goto_ctag()` can show all known tags now; modules/textadept/adeptsense.lua
The "kind" argument is optional.
Fix warnings and errors when compiling for GTK3.
Fix `enclose()` to enclose the whole current word; modules/textadept/editing.lua
It used to enclose just the part of the word behind the caret.
Removed alpha settings since curses cannot show alpha; themes/term.lua
More documentation updates.
Temporary patch to identify OSX command key mouse modifiers; src/scintilla.patch
Will be removed when upgrading to Scintilla > 3.3.6 if upstream patch is
accepted.