make concurrency gettable
Merge pull request #159 from fourk/make_concurrency_visible

make concurrency gettable on TtlCache
fix poms so intellij recognizes integration test source folders
update CHANGES to describe configuration changes relating to batching
indentation
Merge pull request #160 from fourk/fix_poms_for_intellij

fix poms so intellij recognizes integration test source folders
Merge branch 'master' into update_metrics