Merged upstream/master
Merge remote-tracking branch 'upstream/master'
added extra math header
add custom GRT isnan and isinf macros
remove using namespace std; from header
Merge remote-tracking branch 'upstream/master'
changed isnan to grt_isnan, nick please double check it ;)
Merge pull request #11 from openiSOFT/master

changed (forgot to change) isnan to grt_isnan
Merge branch 'master' of https://github.com/nickgillian/grt
added nodeID to Node
added null rejection to Decision Tree
changed Euclidean distance metric to squared Euclidean distance
updated change log
fixed HighPassFilter classType bug
updated GRT GUI pro file
updated readme
updated GUI
updated GUI
updated GUI
fixed linux host endian bug