Pin msgpack for Python 3.5

[frances-h]

Dask distributed runs into issues with the msgpack 1.0.0 release on Python 3.5. Dask no longer supports Python 3.5, so their fix for the msgpack update does not get applied to Python 3.5. This pins msgpack to before the 1.0.0 release on Python 3.5 to avoid the issue.

Dask distributed required dataframe dependencies for a check where the full dependency was not needed. Dask has updated, so the additional dataframe dependencies are no longer required for distributed to work correctly with Featuretools

[rwedge]

Can you add this to the changelog?

[codecov-io]

Codecov Report

Merging #851 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #851   +/-   ##
=======================================
  Coverage   98.14%   98.14%           
=======================================
  Files         117      117           
  Lines       10812    10812           
=======================================
  Hits        10611    10611           
  Misses        201      201

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9dcafc2...5f81cac. Read the comment docs.

[rwedge]

Looks good!