Improved Context class to be more robust.
Refactored all the library code to be more robust.
Simplified and homogenized variable implementations.
Refactoring work on library code, and fixed exception-safety of the sample.
Fully documented all variable types.
Moved CoordinateSystem in separate source file and tidied up TW.Error stuff.
Updated version to 0.4.0.
Full code refactoring.
Improved CoordinateSystem.
Added documentation for low-level functions.
Renamed TW -> Tw for consistency.
Added read-only variable logic.
Sealed some classes and made AntTweakBarException serializable.
Style edits.
Oops, there already is a readonly property...
Noted that key shortcuts don't work for all variable types.
Added attributes to hide backing fields from debugger.
Updated readme.