Merge branch 'master' of github.com:qminer/qminer
persistent objects cleaning up
stream aggregates expose getInt, getFlt, getTm
fixed eval(breakpoint) so it can print exception messages
JS linalg GC stability fix
Merge branch 'master' of github.com:qminer/qminer
Merge pull request #38 from rupnikj/master

stability improved, js stream aggregates