Adding progress_callback parameter to dfs() and calculate_feature_matrix(), removing time remaining

[angela97lin]

Addresses #705 and #736 by adding progress_callback parameter to dfs() and calculate_feature_matrix() and removing time remaining field from the progress bar in verbose=True mode.

[codecov]

Codecov Report

Merging #739 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #739      +/-   ##
==========================================
+ Coverage   97.66%   97.69%   +0.03%     
==========================================
  Files         118      118              
  Lines       10289    10340      +51     
==========================================
+ Hits        10049    10102      +53     
+ Misses        240      238       -2

Impacted Files	Coverage Δ
...s/computational_backends/feature_set_calculator.py	98.23% <ø> (ø)	⬆️
featuretools/synthesis/dfs.py	100% <ø> (ø)	⬆️
featuretools/tests/synthesis/test_dfs_method.py	100% <100%> (ø)	⬆️
...computational_backends/calculate_feature_matrix.py	98.93% <100%> (+0.79%)	⬆️
...utational_backend/test_calculate_feature_matrix.py	99.37% <100%> (+0.02%)	⬆️

---

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 5b6873c...5af16dd. Read the comment docs.

[kmax12]

LGTM! Go ahead and merge