Updating CHANGES.md for the 0.12.0 release
Updating CHANGES.md for the 0.12.0 release

allenday/adam,allenday/adam,kcompher/adam,massie/adam,VinACE/adam,bigdatagenomics/adam,laserson/adam,heuermh/adam,erictu/adam,SwathiMystery/adam,FusionWorks/adam,VinACE/adam,massie/adam,massie/adam,SwathiMystery/adam,VinACE/adam,bigdatagenomics/adam,massie/adam,heuermh/adam,kcompher/adam,tdanford/adam,FusionWorks/adam,gazimahmud/adam,allenday/adam,VinACE/adam,tomwhite/adam,SwathiMystery/adam,heuermh/adam,FusionWorks/adam,tdanford/adam,heuermh/adam,tdanford/adam,FusionWorks/adam,tdanford/adam,tomwhite/adam,tomwhite/adam,erictu/adam,laserson/adam,laserson/adam,rnpandya/adam,erictu/adam,gazimahmud/adam,allenday/adam,gazimahmud/adam,SwathiMystery/adam,gazimahmud/adam,rnpandya/adam,kcompher/adam,bigdatagenomics/adam,tomwhite/adam,bigdatagenomics/adam,erictu/adam,kcompher/adam,laserson/adam,rnpandya/adam,rnpandya/adam