Update to latest version of eco

[cesine]

Why?

We are unable to build our project with Node 12 dativebase/dative#324, we added a test to eco and found that the latest eco master does resolve this issue cesine/eco#9.

Is the -rc ready for use?

Before eco was archived, it had a few release candidates that were published https://www.npmjs.com/package/eco

While these are -rc release candidates which we would normally not pull in, eco is now archived so there wont be any future releases from the official repo.

The new 1.1.0-rc release candidates, and eco master, has an important improvement for handling escaping and sanitizing input. I found several forks which have been using (and building upon) the new release candidates https://github.com/cesine/eco/pulls.

I found that the new -rc have a breaking change where compile is now returning a bare function sstephenson/eco@8ab3bec

We are able to take this -rc into grunt-eco without affecting grunt-eco's interface, which means consumers will be able to get the updates via a minor version on grunt-eco.

How this was tested

• Update to 1.1.0-rc-3 sstephenson/eco@v1.0.3...v1.1.0-rc-3

• update tasks to match new interface feab960

• Manually test the resulting templates using amd in a consuming project

• Manually test the resulting templates using non-amd in a consuming project

• Update test fixtures, and reviewed the diff without whitespace to ensure the functionality is still there, is just been updated to use the new escape and sanitize inside the function:

• Confirmed passing on Node 12 and Node 10 in travis (node 6 and 8 are using different quotes for escaping)

$ grunt
Running "jshint:gruntfile" (jshint) task
>> 1 file lint free.
Running "jshint:tasks" (jshint) task
>> 1 file lint free.
Running "jshint:tests" (jshint) task
>> 1 file lint free.
Running "clean:test" (clean) task
>> 0 paths cleaned.
Running "eco:filesTest" (eco) task
File tmp/filesTest/all.js created.
File tmp/filesTest/flatOnly.js created.
Running "eco:srcDestTest" (eco) task
File tmp/srcDestTest/all.js created.
Running "eco:expandTest" (eco) task
File tmp/expandTest/tests/fixtures/advanced-example.js created.
File tmp/expandTest/tests/fixtures/empty.js created.
File tmp/expandTest/tests/fixtures/example.js created.
File tmp/expandTest/tests/fixtures/nested/example.js created.
Running "eco:basePathStringTest" (eco) task
File tmp/basePathStringTest/all.js created.
Running "eco:basePathFunctionTest" (eco) task
File tmp/basePathFunctionTest/all.js created.
Running "eco:amdTest" (eco) task
File tmp/amdTest/tests/fixtures/advanced-example.js created.
File tmp/amdTest/tests/fixtures/empty.js created.
File tmp/amdTest/tests/fixtures/example.js created.
File tmp/amdTest/tests/fixtures/nested/example.js created.
Running "eco:noJstGlobalCheckTest" (eco) task
File tmp/noJstGlobalCheckTest/all.js created.
Running "nodeunit:tests" (nodeunit) task
Testing eco_test.js.......OK
>> 12 assertions passed (7ms)
Done.
The command "grunt" exited with 0.

Travis results https://travis-ci.com/github/cesine/grunt-eco/builds/176743879