refactor(routing): simplified routing API

Removed ng-bind-route directive, RouteProvider works with ng-view to
find current route and parameters.

Closes #255
chore(mocks): moved mock zone into a separate library
test(ng-mousewheel): fixed ng-mousewheel test
fix(compiler): don't create watchers for attr mappings if no attr is specified

Closes #265
fix(expression_extractor): correctly support @ mapping spec, remove old specs
feat(compiler): allow specifying attribute mappings using annotations

Closes #227
chore(release): v0.9.1
feat(scope): add support to skip auto digest in a turn

Closes #235
chore(sdk): remove uses of meta package
chore(import): make all imports package:canonical
chore(cla): added cla signers
fix(syntax): warnings in directive code
refactor(routing): made NgRoutingHelper public, resurrected ng-bind-route
feat($parse): support the ternary/conditional operator

Closes #272
fix(ng-class): exportExpressionAttrs for ng-class, ng-class-odd, ng-class-even
chore(.agignore): add .agignore to prune command line searches

I use the Ag tool (like ack, grep, etc. - ref
https://github.com/ggreer/the_silver_searcher) for searching.  The
.agignore file is used to prune the search space.
feat($parse): support the integer division operator

Closes #233