Iosevka/changes/4.0.0-alpha.1.md

• [Breaking] Change implementation of character variants to cv## and alternate substitutions (#572).
• [Breaking] Change the building configuration format -- now we use dicts instead of “array of styles”.
• [Breaking] Cleanup of weight levels and increase contrast under heavier weights.
• [Breaking] Removed WOFF 1 web font building.
• [Breaking] Release packages will now be divided by formats.
• Fix the shape of hook-top V's.
• Add half-filled stars (U+2BE8 ... U+2BEB, #708).
• Add ligation set for Verilog (#710).
• Correct description of 1 variants (#711).
• Add variant u/toothless-corner (#706).
• Add support for all double-struck Latin letters and Digits (#712).