Skeleton user interface can also be easily created using the Yo generator tool.
But the answer to the below question is NO
Since the development of Composer is still in progress with the latest version v0.18.0. The development team of Composer is very active and the composer builds are deployed every week with some ‘Breaking changes’. I would suggest keeping a track of the releases until Version 1 of composer is released.
Link of Hyperledger composer releases: https://github.com/hyperledger/composer/releases