Added header anchors
Escape ^ character
Added block KaTeX formulas support: $$\KaTeX$$
Added IDEA files to gitignore
Added IDEA files to npmignore
Handled KaTeX exceptions
Fix heading regexps
Fixed warnings
Added colored text support: %#rrggbb Text%, %rgb(12, 34, 56) Text% etc.
Optimized color regexps
Fixed KaTeX rendering
Added background color support: %%#rgb Text%% etc.
Added support for ruby text (furigana): {kanji}(reading)
Added support for glosses: !{word or phrase}(explanation)
Added support for empty anchors: ^anchor_name → <span id="anchor_name"></span>
Added new syntax and fixed some warnings.