chore: add plugins to devDeps so that we can test them on Travis
chore: bump version
chore(travis): create symlink to testacular

To avoid installing another testacular into node_modules/testacular (as
a peerDependency for the plugins). And therefore avoid npm issue trying to
create already created symlink.
test: use sinon's sandbox and do not stub console.log

Now, simon creates a sandbox per spec and remove all spies, stubs afterwards.

It fixes console.log as well. It should only be stubbed explicitly, but not globally during all tests.
That completely disabled console.log for debugging.

I removed some specs for logger, because log4js is super stupid - it has global state and replaces
the console.log whenever you call configure.
I'm really getting tired of this library. We should not use it.
chore: update config for sublime's open related
test(tasks): add extra mocha-globals for tasks test

Because we can't reuse the same file for both unit and tasks tests. When all tests are run by grunt, it's run inside a single VM and Node.js caches the module and evaluate only once.