v1.0.0-rc.15

Big thanks to the 6 contributors who made this release possible!
It contains many bug fixes 🐛 , documentation improvements and update to material-ui 3.1.1

Breaking changes

We are now relying on ^material-ui/[email protected]

Changes

• Make a lot improvements in build systems and dependency resolving. We saved 3kb 🚀 @TrySound
• Make possible to pass pipe prop to MaskedInput @mckernanin
• Fix formatting of dates on the docs @joebandenburg
• Remove redundant import from v8 @Jtango18
• Fix proptypes error when using React.createRef
• Fix missing initialFocusedDate in typescript typings
• Fix ref property for inline pickers
• Adjust validation for min/max rules - now they are not relying on current date time and compares end date for maxDate prop and start of day for minDate