Tag Stan-j0.3-v0.0.3

Bump tag to v0.0.3
Tag Jags v0.0.1 (Jags-j03-v0.0.1)

Register Jags v0.0.1
Jags v0.0.2 and v0.0.3

Github branch is Jags-j0.3-v0.0.3
Merge pull request #1285 from goedman/metadata-v2

Tag Stan v0.0.3 (Stan-j0.3-v0.0.3) and Jags v0.0.3 (Jags-j0.3-v0.0.3)