Update to 6.5.1, Sharp Thin Pro font

Fix README.md

Update to 6.4.0, Sharp Light Pro Font

Update to 6.3.0, Aliases and Sharp Regular Pro fonts

- Aliases are now included in the icon list names
- Support for font style "Font Awesome Sharp Regular" (Pro)
- Update generator to include all alias names
- Update free font files to latest release

README.md spelling fixes

default font weight is set to QFont::Normal in FontData's constructor