Maintenance release for Vaadin 14.1

Fixes issue with Polymer 3.3 dependency leaking in and breaking things #16

Release for Vaadin 14

New features in 2.0.0:

• Vaadin 14 npm support
• readOnly & disabled mode
• ValueChangeMode support (default is LAZY)

Fixes in 2.0.0 since 2.0.0.rc1:

• Do not include build-info file into add-on
• Use released web component version so that npm install will not fail on windows if git is not in path

1.0 Beta1 - Toolset configuration API

Added API to configure which tools are visible to the user.
Increased default size to 300px height and 800px width.

Update web component version

Updated web component to 2.1.4 which fixes some backspace issues in certain browsers.

Update to Vaadin 10 beta10 compatible

Now works on latest V10 prerelease.

First Release - Basic features and Binder integration

First version of the component with basic API support and possibility for using it with Binder.