Consider archiving repo

[hazendaz]

Its easy these days to run 'ant' via maven and letting maven do things that otherwise were done in ant. Specifically, the https://github.com/hazendaz/yuicompressor-maven-plugin/ otherwise supersedes this. I'm maintaining that one but also important to note that yui is entirely end of life. I'm debating bringing that back but don't think there is a need to maintain a specific ant version of it when that can be done within maven directly and if users are still using ant, they delegate to the stuff that for whatever reason doesn't exist in maven using maven-antrun-plugin.