Bump version to 0.16.0.dev0

[stormwindy]

No description provided.

[codecov-commenter]

Codecov Report

Merging #393 (b7cdda1) into master (993eaeb) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #393   +/-   ##
=======================================
  Coverage   86.06%   86.06%           
=======================================
  Files          41       41           
  Lines        2885     2885           
=======================================
  Hits         2483     2483           
  Misses        402      402           

Impacted Files	Coverage Δ
databricks_cli/version.py	28.57% <100.00%> (ø)

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