Minor

Fixing formatting issue and adding _build in .gitignore
Adding the implicit conversion char -> String to the Gosu Spec
Merge branch 'master' into gosu/spec/expressions
verify that an anonymous class cannot declare its own constructors.
Disallow duplicate classes as in "class A { class A {}}"
Merge branch 'master' into spec
Change versions to 1-spec-SNAPSHOT / 3-spec-SNAPSHOT
Change versions to 1.X-SNAPSHOT / 3.X-SNAPSHOT
Merge branch 'master' into spec
Merge branch 'spec'