Remove ErrorReporter use in InternalLoader. Throw from LoaderHooks.

(Next step will use promises for communicating errors from LoaderHooks)
Remove unused ErrorReporter in ModuleSpecifierVisitor

Review URL: https://github.com/google/traceur-compiler/pull/1052

Closes #1052.
Fix hoisting of let/const declarations.

Only hoist top-level let/const declarations and fix bug with
initializers of hoisted declarations.

Fixes #1028.
Array.from polyfill
Simplify command line and options processing.

Remove some special case flag processing and rely on commander.js more.
Move referrer option from System to options.js.

Review URL: https://github.com/google/traceur-compiler/pull/1061

Closes #1061.
Add command line option --module <module-name>.

  Allows scripts and modules to be compiled in any order.

Review URL: https://github.com/google/traceur-compiler/pull/1064

Closes #1064.
Only add System.get() evaluator for modules=register.

Fixes #1066

Review URL: https://github.com/google/traceur-compiler/pull/1067

Closes #1067, closes #1066.
Destructuring and cover grammar fixes

This changes the strategy from using a transformer to transform the
cover grammars into rewinding the scanner and reparsing using the
target grammar.

This also introduces a AssignmentElement which is used for the
elements of the assignment pattern (like BindingElement which is used
for binding patterns (and default parameters).

Fixes #183
Fixes #836
Fixes #838
Fixes #969
Fixes #1015
Typos

Left over fixes from 1f117083158f42ad3195af7e5399955a62101fa9
Polyfill Reflect.global

Review URL: https://github.com/google/traceur-compiler/pull/1070

Closes #1070.
Generate code that uses Reflect.global for global

Review URL: https://github.com/google/traceur-compiler/pull/1071

Closes #1071.
0.0.45
Commit the generated code to gh-pages.
Rebase.
Recompile
Recompile
Update built files after merge
Rebuild traceur-runtime
Update runtime and commit binary
Rebuild
Recompile
Merge and rebuild