Update CHANGELOG with notes for 2.0.1
Update CHANGELOG with notes for 2.0.1

jpsim/SWXMLHash,yas375/SWXMLHash,jpsim/SWXMLHash,yas375/SWXMLHash,jpsim/SWXMLHash,yas375/SWXMLHash,drmohundro/SWXMLHash,chrisamanse/SWXMLHash,chrisamanse/SWXMLHash,drmohundro/SWXMLHash,chrisamanse/SWXMLHash