new testing framework; now tests browser-side rendering too
version bump
* use a pool of sandboxes, instead of one per include
* add the pool class
* compile to functions
* engine default sandboxes
* closure_compile_with_sandbox_cache: rename scriptObj -> fun, cause
  it's more fun now!
* closure_compile_with_sandbox_cache: fixup reload async compile
* closure_compile_with_sandbox_cache - fix browser mode problems

  - app.coffee tests pass
  - consolidate.js tests pass
Merge branch 'closure_compile_with_sandbox_cache' of github.com:apgwoz/toffee into closure_compile_with_sandbox_cache