Modernize Isort + Black usage

Update broken dependencies
Use latest black + isort releases

What's Changed

• Bump invoke from 1.4.1 to 1.5.0 by @dependabot-preview in #61
• Upgrade to GitHub-native Dependabot by @dependabot-preview in #70
• Bump pytest from 6.2.1 to 6.2.5 by @dependabot in #82
• Fix deps by @Kilo59 in #91

New Contributors

• @dependabot made their first contribution in #82

Full Changelog: 0.0.8...v0.0.9

GPLv2 License Update

• update the license to GPLv2 due to prospector dependency
• pin isort version to < 5
• pin prospector version to < 1.3

Fix __version__ bug

fixes fatal error that occurred because __version__ no longer exists

https://pypi.org/project/blue-chip/0.0.7/

integrate isort

This release adds a sort command powered by isort

The sort command will automatically be called when bc fmt is called.

sort can be invoked independently with bc sort or bcp sort.

isort/sort has been configured to follow black's formatting rules.