Multiple bug fixes, better metadata

• Add ★, ⚑, ✚
• Instal .ttf files by default
• Set grid fit and anti-alias to all sizes
• Added SIL license to the font file
• Adjusted font name, family name and derived font names
• Force width to 540 units when building derived fonts
• Set ΤεΧ space to 540 (normal glyph width)
• Set Italic Angle to 0
• Set OS/2 Style Map to Regular
• Update copyright notice
• Sorted symbols in the SFD file