Upgrade react

• Bugfix: #177
• Remove componentWillReceiveProps warnings

Small additional fixes

• Handle shift modifier to add/subtract selected cells.
• Add condition to use onClick instead of onDoubleClick for mobile devices
• Add copy/paste for IE

Custom Renderers

Many thanks to @patrick-jones

Updates

• Refactoring for to support custom renderers
• Drag & drop possible ( see Sheet with custom renderers @ https://nadbm.github.io/react-datasheet/ )

v1.2.11

Update version

v1.2.9

[bugfix] when in edit mode, copying only copied previously held cell …

v1.2.5

bump version