v0.4.1 changelog, child-process split, v0.4.* for readme

Updated changelog for release

Release date in changelog

Add bugfixes to CHANGELOG

Prepare v0.3.2 release

Clean up some ipv6 tests

Merge branch 'refs/heads/travis-disable-libev'

Prepare v0.2.7 release

Add release note links to CHANGELOG

Prepare for v0.2.5 release