v2.0.0

Rewritten the extension to use an additional Visual Studio add-in rather than hooking into ReSharper at a very low level to prevent issue #5. Additionally, this opens up new features, such as icons in tooltips. The VS package is automatically and transparently installed and uninstalled with the ReSharper extension. It might require an additional restart of VS though. Also added a bunch of settings and their corresponding options page.

As a side effect, VS2010 and R# 8.0 and 8.1 aren't supported anymore.

Fix: Color highlighting doesn't disappear anymore when the solution is reloaded. (#5)
Fix: Nested delegates shown in lambda syntax don't display the outer class name anymore. (#7)
Fix: Anonymous types are correctly displayed. (#6)
New: Better tooltip style.
New: An icon is now displayed next to identifiers and issues inside the tooltip (configurable).
New: CanBeNull/NotNull annotations are now displayed inside the tooltip and parameter info (configurable).
New: The tooltip font configured in Visual Studio options is now used. (#8)
New: Added an options page.