Merge pull request chakki-works#38 from AlongWY/master

🐛[BugFix]fix get enitity

Merge pull request chakki-works#32 from kevinalexmathews/master

Add weighted average

Merge pull request chakki-works#30 from himkt/add-validation

Add validation for an input

Merge pull request chakki-works#40 from shirayu/npn-metrics-fix

🐛 [BugFix] Fix wrong FP calculation

Merge pull request chakki-works#13 from alexeyr/pre-padding

Support both pre- and post- padding

Update travis config

Update travis config