v0.3.0

This minor version adds the following to the cvi package:

• The WB index.
• The XB index.
• Soft privatization of CVI parameters and methods. Now only the criterion_value parameter is openly exposed to the user, though all other parameters are accessible with internal use syntax of a prepended underscore _.
• Early ICVI development is added as the module cvi.compat.v0.

What's Changed

• Feature/wb by @AP6YC in #47
• Nominally add XB by @AP6YC in #48
• Feature/privatize parameters by @AP6YC in #52
• Feature/compat by @AP6YC in #53
• Release/v0.3.0 by @AP6YC in #55

Full Changelog: v0.2.0...v0.3.0