Major changes
- Add fallback_icon_color query parameter to API #14 (thanks @mmkal)
- Change User Agent for fewer grey icons #12 (thanks @mmkal)
- Support size range queries
(80..100.120)#7 - Better support for cyrillic lettericons #10
- Introduce rewriting requests to just the domain part #9
Minor changes
- Use go 1.7.3
- Use Noto font
- Limit lettericon size to 256