Updated CHANGELOG for 0.5.10

Updated CHANGELOG for 0.5.9

Updated CHANGELOG for 0.5.8

Updated CHANGELOG for 0.5.7

Updated CHANGELOG for 0.5.6

Updated CHANGELOG for 0.5.5

Updated CHANGELOG for 0.5.4

version 0.5.3 bump

version bum[p

Merge pull request pyne#864 from scopatz/fnfe

replaced FileNotFoundError with OSError for Python 2 compatability