2.0.1.0

• Issue 873 - Spring '18/API v42.0 update:
• SOAP client updated to API version 42.0.
• API version 42.0 now available for configured connections.
• Updated for new/modified Lightning base components. Note that due to aggressive XSD caching by IntelliJ IDEA/WebStorm, you may need to use Ctrl+B/Cmd+B on an existing Lightning element or attribute to force the cache to update before changes are available.
• Updated SLDS to 2.5.2.
• Updated Aura JavaScript API interfaces.
• Updated metadata XSD to Spring '18.
• Updated all integrated API documentation.
• Issue 878 - Fixed a few issues with how various types of Lightning errors are interpreted and reported.
• Other minor fixes.