Improvement/named exports

[boygirl]

This PR contains breaking changes!

• adds support for minDomain and maxDomain. closes minDomain and maxDomain victory#1008
• changes how domainPadding works (no longer constrains padding to existing quadrants) closes Don't coerce domainPadding to existing quadrant victory#1009
• refactors all util methods to use named exports (except events which needs to be bound to context anyway)
• generalizes and removes methods where possible, and moves a few axis specific methods to victory-chart
• significantly refactors Domain methods
• significantly refactors Data methods
• Upgrade to react-fast-compare@^2.0.0 (now returns false for non-identical functions)
• Less aggressive shouldComponentUpdate logic. Now only checks on primitive component props