Forked package from https://github.com/ianstormtaylor/slate/tree/master/packages/slate-html-serializer

Contains fixes for IE 11: ianstormtaylor/slate#1756

This package contains the React-specific logic for Slate. It's separated further into a series of directories:

• Components — containing the React components for rendering Slate editors.
• Constants — containing a few private constants modules.
• Plugins — containing the React-specific plugins for Slate editors.
• Utils — containing a few private convenience modules.

Feel free to poke around in each of them to learn more!