Encapsulate lexer tokens and styles better.
This does not require the Lua state to be reset anymore.
Also cleaned up C/C++ and Lua code.
Enable Scintillua to accept and use external Lua states.
Updated LaTeX lexer.
Thanks to Olivier Guibé.
Updated copyright information.
Updated Go lexer.
Thanks to Klaus Borges.
Updated CHANGELOG.md.
Updated to Scintilla 3.3.9; Makefile
Added tag scintillua3.3.9-1 for changeset 660cf02ef838