Noto Sans Tangsa v1.506

This release improves the shape of the final NG after community feedback (#9, thanks to David Williams).

Noto Sans Tangsa v1.505

This release:

* Updates the shape of various letters after community feedback, thanks to David Williams. (#3)
* Restores some missing kerning pairs. (#4)

Noto Sans Tangsa v1.504

This release:
* fixes a number of fontbakery fails
* corrects the kerning of the PA and XA glyphs (#1)