Long string behaviour, search whole inheritance chain, developer goodness

Long string handling

By adding a LongStringBehaviour property to columns, this change allows users to specify how long strings should be handled.

Users can choose from:

1. Doing nothing (default behaviour)
2. Truncating, with or without ellipsis (customisable; defaults to "...")
3. Wrapping

When truncating or wrapping, the width can also be specified.

Minor changes

• Improved test coverage of PublicPropertiesNotFoundException (addressing http://bit.ly/2E4GQCg)
• Some debugging sugar in the form of DebuggerDisplay attributes
• Now searches base classes for public properties available through inheritance