MBlog/Model/BlogProjectTests.cs - blog project tests
Model\BlogProject.cs - blog project loading and saving

Model\BlogFile.cs
Model\BlogFileType.cs - new files
add MarkdownDeep nuget
Oh FSCK THIS! I'm doing a WPF style app. (and I hope I won't regret it in the future...)
Forms/MainForm.xaml - initial wpf design
Forms/MainForm.xaml.cs - updating preview and handling tooltips