angular/angular.js — pull request #5573 by lgalfaso (2013-12-30 15:55:25+00:00)
Title: fix(ngShow/ngHide): follow javscript `truthy`/`falsy` logic

Make ngShow and ngHide follow javascript `truthy`/`falsy` logic and
not the custom toBoolean logic

Fixes #5414 #4277