Merge pull request #24 from Seinlin/master

Make a local copy of DroidSansThai.ttf.
[FiraSansOT] [bug 960298] Replace ampersand glyphs in the Italic faces with the regular (upright) glyph of the corresponding weight, slanted to 8° to match the slope of the italic glyphs.
Merge pull request #25 from jfkthame/master

[FiraSansOT] [bug 960298] Replace ampersand glyphs in the Italic faces w...
[Bengali] replace Lohit with Noto for Bengali, for stronger glyph strokes
Merge pull request #28 from jfkthame/master

[Bengali] replace Lohit with Noto for Bengali, for stronger glyph stroke...
[bug 939280] add the Noto Color Emoji font
Merge pull request #29 from jfkthame/master

[bug 939280] add the Noto Color Emoji font
Add Support for reading Dzongkha and Tibetan Language
Merge pull request #30 from rabbihossain/master

Bug 953028 - Tibetan script fonts not available in B2G
[bug 815577] Include Khmer font in b2g. This is the unhinted version of NotoSansKhmerUI-{Regular,Bold} from the Noto fonts alpha repository, rev.13.
Merge pull request #31 from jfkthame/khmer

[bug 815577] Include Khmer font in b2g. This is the unhinted version of ...