Add the [ProvideBindingPath] attribute since the extension includes multiple assemblies (fixes #85)
Set Copy Local to True for the output window interfaces assembly so composition errors occur as late as possible
Add helpful error message if output window service cannot be located
Add top-level options page for DartVS
Add options for Dartium location and Dartium profile location (fixes #83)
Use resources for language display name and installed product registration
Moved StdIOService to Common.
Removed some DanTup prefixes from assembly info.
Moved some common AssemblyInfo strings to SharedAssemblyInfo.
Use EditorConfig to assist users working on this project
Fixed indentation settings in project system code (fixes #81)
Updated to latest Analysis Service snapshot.
Resource string tweaks.

These were made in this branch but conflicted with other changes, so
re-applying them.