message: update docs for 0.3.0
diff: @@ -12,9 +12,9 @@ Petmate runs locally on a Mac/Windows/Linux machine and doesn't require an inter
  ## Download Petmate
  {:.downloads}
  -* MacOS: <a href='http://nurpax.com/petmate/releases/mac/Petmate-0.2.5.dmg'>Petmate-0.2.5.dmg</a>
  -* Windows: <a href='http://nurpax.com/petmate/releases/win/Petmate%20Setup%200.2.5.exe'>Petmate Setup 0.2.5.exe</a>
  -* Linux: <a href='http://nurpax.com/petmate/releases/linux/petmate_0.2.5_amd64.deb'>petmate_0.2.5_amd64.deb</a> (untested but reported to work!)
  +* MacOS: <a href='http://nurpax.com/petmate/releases/mac/Petmate-0.3.0.dmg'>Petmate-0.3.0.dmg</a>
  +* Windows: <a href='http://nurpax.com/petmate/releases/win/Petmate%20Setup%200.3.0.exe'>Petmate Setup 0.3.0.exe</a>
  +* Linux: <a href='http://nurpax.com/petmate/releases/linux/petmate_0.3.0_amd64.deb'>petmate_0.3.0_amd64.deb</a> (untested but reported to work!)
  ## Features
  @@ -59,6 +59,13 @@ The settings are saved in the following location:
  ## Release history
  +Petmate 0.3.0 (2018-08-11)
  +- Add brush rotation ([#70](https://github.com/nurpax/petmate/issues/70))
  +- Add "character only" drawing mode (e.g., change screencode but leave color untouched) ([#50](https://github.com/nurpax/petmate/issues/50))
  +- Add t64ass and ACME .asm export ([#13](https://github.com/nurpax/petmate/issues/13))
  +- Add BASIC export (w/ BASIC display code from @Esshahn) ([#14](https://github.com/nurpax/petmate/issues/14))
  +- Add togglable grid on top of painting canvas ([#16](https://github.com/nurpax/petmate/issues/16))
  +
  Petmate 0.2.5 (2018-08-09)
  - New export options for PNG ([#55](https://github.com/nurpax/petmate/issues/55))
  - Double width & height for PNG export
  