v4.3.1

Changes since v4.3.0 v4.3.0...b8f3078

Added htmlbars as an alias for Handlebars: #2000
Grammars for 8 languages: #2064
ATS language support: #2057
Add .4TH Forth extension: #2072
Update URL for AutoHotkey grammar: #2058
'Text' shouldn't qualify as a valid modeline language. #2063
Support of Modelica language: #2059