redux-subspace version 2 - Spliting packages, better middleware support, redux-saga support, improved docs

[mpeyper]

This one is huge. I don't think a single line of the version 1 survived. It will probably be easier to just look at or clone my fork than to read this PR, but review however you feel is easiest for you.

The changes here are plentiful:

• Complete refactor of core subspace code
  • Middleware support
    • Improved support for Redux middleware
    • Added middleware pipelines for subspaces as well
  • More versatile ways to create subspaces (less duplication in keys for common cases)
• Library has been split into multiple packages
  • redux-subspace: The core of the library
  • react-redux-subspace: React bindings to create subspaces for components
  • redux-subspace-saga: Support for creating subspaced sagas compatible with redux-saga
  • redux-subspace-wormhole: A redux-subspace middleware that replaces the root node functionality
• Improved documentation

[vivian-farrell]

Is the import in https://github.com/mpeyper/redux-subspace/blob/master/packages/react-redux-subspace/src/components/SubspaceProvider.js for subspace correct? Redux-subspace is not in the list of packages in the package.json so how is it resolved?

[vivian-farrell]

My bad, it is in the list. Ignore the comment above.

[jpeyper]

The code looks good and test coverage is awesome. Good job.

Docs also seem good, although I think there may be some tweaking over time.

I think we should merge this as is and then fix any docs problems on master.

[vivian-farrell]

I'm happy to merge this. I think we should publish to NPM with a canary build until we're happy it's stable.