Pulling in FSharp Depth colorizer.
Made the depth colorizer work with the FSharp Compiler Services.  This is not integrated with the rest of the PowerTools.
Removed additional unused files.
Move the code to a single project

Make it work with VS 2013
Integrate FSharpDepthColorizer with other projects
Port service registration to C#

The problems still persist:
- The extension doesn't load in VS2012
- It is fragile in VS2013
Cache ProjectProviders forever
fix: ProjectProvider cache can fail if there's no containing project
Merge pull request #61 from vasily-kirichenko/project-loading-optimization

Projects loading optimization
Don't do a pause at the end of a build - relates to #50
trying to add validation to the Rename dialog
Merge pull request #62 from forki/Build

Don't do a pause at the end of a build - relates to #50
add "live" validation into Rename dialog
Merge branch 'rename-dialog-validation'
Add AppVeyor badge
Disable OK button if validation fails
Update the extension to 0.3.0
fix: Rename refactoring doesn't work correctly if the renaming symbol occurs more than one time in a code line
Merge pull request #65 from vasily-kirichenko/master

fix: Rename refactoring doesn't work correctly if the renaming symbol oc...
Use Ctrl + R R key binding for rename refactoring

Thanks Don and F# team for help.