Merge pull request #395 from bashtage/ensure-files-packaged

BUG: Fix packaging issue

Merge pull request #394 from bashtage/rls-2.1.0

DOC: Small fixes for docs

RLS: Release 2.0.1

DOC: Fix spelling

Merge pull request #354 from bashtage/update-doc

DOC: update notes for release

Merge pull request #348 from bashtage/rls-1.26-v2

RLS: Final fixes for release 1.26

Merge pull request #318 from bashtage/reenable-pickle

ENH: Allow pickle with NumPy Generator

Merge pull request #317 from bashtage/remove-generator

Remove generator

Merge pull request #299 from bashtage/update-setup-no-reqs

MAINT: Update setup to reflect correct requirements

Merge pull request #289 from bashtage/restore-3.6

MAINT: Restore 3.6 functionality