sbt-crossproject 0.3.1

• Fix #80: make name default to the cross-project's ID (e.g., foo), instead of including the platform suffix (e.g., fooJVM).
• Add .withoutSuffixFor(SomePlatform) to instruct sbt-crossproject not to add the platform suffix for the given platform, which is useful if you mainly use one platform (see the readme for more details).