feat(styles): float classes breakpointed

[jacekkarczmarczyk]

BREAKING CHANGE

removes .left and .right classes in favour of .float-{breakpont}-{dir}

Motivation and Context

make float classes similiar to all other utility classes

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Improvement/refactoring (non-breaking change that doesn't add any features but makes things better)

Checklist:

• The PR title is no longer than 64 characters.
• The PR is submitted to the correct branch (master for bug fixes and documentation updates, dev for new features and breaking changes).
• My code follows the code style of this project.
• I've added relevant changes to the documentation (applies to new features and breaking changes in core library)

[jacekkarczmarczyk]

Release notes updated