Migrate Language Adaptors to Top Level Projects of RxLANG

[benjchristensen]

As we approach 1.0 and based on the experience of working on the language adaptors it is going to make sense to let the adaptors move to a first-class level and be named RxScala, RxClojure, RxGroovy etc instead of RxJava-Scala, RxJava-Clojure, etc.

This should also mean they become top level projects of their own with a single dependency on RxJava.

This does not need to be done immediately, but probably as we hit the 1.0 Release Candidate stage.

Two reasons for this are:

• don't tie the naming to the "Java" portion of the core function implementations
• decouple release and versioning cycles (particularly important for Scala where it is typical to maintain branches for the different Scala versions such as 2_10 and 2_11)

Anyone else agree or disagree?

[samuelgruetter]

Agree. But as you said, it needn't be done immediately, but would be good to do it for 1.0 Release Candidate.

[benjchristensen]

Done.

[samuelgruetter]

Before people start working on the new repos, I'd like to suggest that we keep the git history. According to https://help.github.com/articles/splitting-a-subfolder-out-into-a-new-repository, this seems to be very simple, and the advantages of keeping the history are considerable.

[zsxwing]

Cool command!

[samuelgruetter]

see ReactiveX/RxScala#1 (comment)

[headinthebox]

Happy to have someone with strong Git foo do this.

[benjchristensen]

I made all the changes to repos this morning to retain history.