Update changelog for 0.2.13
Update changelog for 0.2.13

doctaweeks/umurmur,snowblind/umurmur,doctaweeks/umurmur,troxor/umurmur,fmorgner/umurmur,doctaweeks/umurmur,snowblind/umurmur,fmorgner/umurmur,troxor/umurmur