Bump version to 0.3.0

Status Job ID Name Coverage
  Build
failed #3211
openswift atbuild
osx

00:00:09

 
Name Stage Failure
failed
osx Build There is an unknown failure, please try again
Warning: working around rdar://24221024
Warning: working around rdar://24221024
Completed task xcode-emit.check.
Built package xcode-emit.
$ mkdir xcode-emit-${CI_BUILD_REF}
$ cp bin/xcode-emit xcode-emit-${CI_BUILD_REF}
cp: bin/xcode-emit: No such file or directory

ERROR: Build failed: exit status 1