Sahl Naskh font

Sahl (Arabic for even, easy, convenient) is a fork of Droid Arabic Naskh font, fixing some of the issues in the original font.

Changes:

• Quranic annotation marks:
  • Made U+06E4 bigger, it was tiny and almost invisible!
  • Changed U+06E0 to be a small 0, not a black rectangle!
  • Changed U+06DF to be a small sukun, not black circle!
  • Changed U+06E1 to not be a small initial haa!
• Increased the distance between vowel marks and base letter, they were too close to be readable.
• Removed the Riyal ligature, this symbol should be used directly if needed, not automatically replace the Arabic word riyal.
• Added GDEF ligature caret, just in case any application begins to support them.
• Merged the Droid Serif in the font, so that it covers Latin and punctuation marks.
• Raised the isolated Noon to the baseline, as it looks out of place next to Waw, Raa or even Alef (the glyphs it is likely to come next to).
• Fixed the position of Hamza below Lam-Alef; it was placed under the Lam!