chore(pubspec): move unittest into dev_dep
chore(demo): Add simple controller to TodoApp
chore(test): add missing test for ng-change

Closes# 399
fix(eval access): Do not crash on null cached value

Fixes #424
chore(build): More debugging in Travis output
fix(select): Corrected NPE if select multiple nested in ng-if

Closes #428
style(ngModel): change currentErrors to errors