Log Message:
py-tqdm: updated to 4.30.0

tqdm v4.30.0 stable
avoid moving when leave=False
generalise nested bar tests
add display() helper function
add and expose format_dict
- allow arbitrary keyword arguments for format_meter
- document format_dict overriding
- add tests for overriding
- add and tidy developer documentation
fix py3 CLI pipe decoding error
framework overhaul (developing, testing, Travis CI updates)
tidy code and style (flake8)
setup.py refactor
- setup.py make
  . add support for multi-line commands
  . tidy and efficiency
- replace setup.py's built-in make -> py-make>=0.1.9
- add requirements-dev.txt and extras_require[dev]
add, update and tidy tests
include interactive Jupyter demonstration
update documentation
- add FAQ about py2 pipes
- add badges
- update examples
- update authors