Various features and testing for Logic and LogicValue

[mkorbel1]

Description & Motivation

Further improving the usability of and consistency between Logic and LogicValue. Includes:

• getRange on Logic
• zeroExtend, and signExtend on Logic and LogicValue, plus extend on `LogicValue.
• withSet for LogicValue and Logic
• reversed on Logic
• slice on LogicValue
• Reverse slicing on both Logic and LogicValue
• Made IfBlock a little more flexible
• Improved documentation and README around these features
• Added a script to generate line coverage

Related Issue(s)

Close #113
Improve on #91
Close #117
Close #101
Close #83
Fix #122

Testing

Passing existing tests and added a bunch more tests.

Backwards-compatibility

Is this a breaking change that will not be backwards-compatible? If yes, how so?

No

Documentation

Does the change require any updates to documentation? If so, where? Are they included?

Yes, documentation updated