fix(zone): error dump string
fix(http): Proper handling of non-2xx responses.
feat(pert): basic pert harness
refactor(scope): relax function only once
refactor(scope): use identity instead of obj.equals()
refactor(ngRepeat): use [] for scope access
refactor(parser): remove invocable objects from parser
chore: update karma to v0.10
fix(parser): No more static calls, move Lexer into its own class
chore(tests): Better warnings for run-tests.sh
fix(perf): return more efficient closure from _relaxFnArgs()