We just release libcgroup v0.37.rc after about five months of development. There are some really cool changes, lots of bug fixes
cgconfigparser supports quotes
lots of bug fixes for tools (cgget, lssubsys, etc)
cgsnapshot is a cool new tool!
The release is available from https://sourceforge.net/projects/libcg/files/
As usual the home page is at http://libcg.sourceforge.net/, the generated documentation is at http://libcg.sourceforge.net/html/index.html. The source code (git) is at http://libcg.git.sourceforge.net/git/gitweb.cgi?p=libcg/libcg;a=summary