fix export default class declaration
Fix repl options menu

Fixes #1334
Block binding: Handle nested scopes better

Issue #1358
0.0.66
Pass metadata to REPL onFailure.

Show transcoding if the error is an evaluation error.

Fixes #1373

Review URL: https://api.github.com/repos/google/traceur-compiler/issues/1375

Closes #1375, closes #1373.
Use Compiler API in Loader.

Now our command line always runs through our Compiler API.

Fixes #1324

Review URL: https://api.github.com/repos/google/traceur-compiler/issues/1355

Closes #1355, closes #1324.