Typing

[Christian-B]

Builds on #283 which holds any real code changes.

index_is_value.py → mypy.bash is a nuke and a new file. git is confused.

Now checks code but not tests are full typed
mypyd.bash to run this locally

included code changes

• assert not None
• make a temporary variable or type or check not None
• Progress_bar self._chars_per_thing = 1.0
• Progress_bar unset values changed from int to str values
• • test_log mock subclass changed

Weirdness

• CamelCaseConfigParser could not get python3.8 format
• helpful_functions lcm and gcd could not merge the overloads
• require_subclass mypy does not like the weirdness here

tested by tiny prs (should all be merged)
SpiNNakerManchester/SpiNNMachine#272
SpiNNakerManchester/SpiNNMan#420
SpiNNakerManchester/PACMAN#580
SpiNNakerManchester/SpiNNFrontEndCommon#1221
SpiNNakerManchester/sPyNNaker#1498
SpiNNakerManchester/SpiNNakerGraphFrontEnd#287

Jenkins
SpiNNakerManchester/IntegrationTests#297