NotoSansSyriacEastern-v3.000

Noto Sans Syriac Eastern v3.000

This release:
* Comprises only of the Eastern (Maḏnḥāyā) style of Noto Sans Syriac
* Interpolates as a variable font
* Fixes the naming of the stylistic sets (#1)
* Fixes a problem with the rish-dieresis ligature (#8)
* Cleans up some of the OpenType layout code
* and fixes various fontbakery fails.