Remove markzero dependency.
0.8.235
Use tilde dependencies.
0.8.236
Remove argparse dependency.

Resolved by cli-system, no longer available on the module.
Update version.
0.8.237
Remove migrated test cases.
Remove migrated test fixtures.
Remove migrated test cases.
Remove migrated tests.
Remove migrated tests.
Remove migrated test.
Remove migrated tests.
Remove migrated enum tests.
Remove migrated float tests.
Remove migrated integer tests.
Remove migrated number tests.
Remove migrated list test.
Remove migrated file type tests.