New API stablizing and documentation up

With the release of GogTasks v4.3, I hope to have reached a point where the new API is now stable. Version 4.0 through 4.2.3 contained some issues with Outlook crashing due to bad error handling and some issues with the due date skipping a day, which I now have fixed. If you're still experiencing problems with the new API, don't hesitate to contact me.

As for the homepage, I have now created a new section called "Documentation" where I've collected the articles I've written sporadically throughout the last few months. I hope these articles will answer many of the questions I get from both old and new users, and I will continue to improve that page as time goes by.