Visual D 0.3.26 released

[Diggory]

Thanks for your great plugin! The integration with VS is great, 
especially the debugging.

There are a few things I think could be improved though:
- I couldn't get it to work properly on VS 2012, the 
functionality seems to be there but it doesn't hook up with the 
buttons properly. For example, "Start Debugging" fails, and so 
does "Build -> Build Solution" with "The method or operation is 
not implemented", whereas right-clicking in the solution explorer 
and choosing "Build" works just fine. It seems all toolbar 
actions and actions on the main menu bar don't work, whereas 
right-click actions do. It works fine in VS 2010.

- I couldn't find a way to get it to play nicely with a 
hierarchical folder structure. I can add a folder in VS but it's 
actually a filter rather than a folder, and if I create a 
subfolder with a .d file in and then add it to the project it 
just shows up in the top level. Since D's modules work based on 
folder structure it would be nice if Visual D worked the same way.

- It would be nice if ctrl-shift-space showed the parameters 
expected like in other languages in VS. Visual D seems to already 
have that information because when you hover over a function name 
it shows the signature.