Adding Markdown document types.
Building basic UI.
Inheriting MACOSX_DEPLOYMENT_TARGET for Demo from project.
Adding WebKit to Demo.
Implementing Demo document loading and saving.
Implementing support for default font.
Adding toolbar.
Adding tab view and improving toolbar.
Implementing tag tree.
Converting SimpleTree keys to constant strings to prevent typos.
Adding attributes to nodes only if they are available.
Displaying tag attributes in tooltip for now.
Adding HTML text view to UI.
Binding segmented control and tab index together via selectedPreviewTabIndex.
Implementing and connecting SimpleHTMLGenerator.
Adding WebView constraints.
Implementing HTML preview.
Adding comment about efficiency.
Implementing crude HTML tag attribute generation.
Merge remote-tracking branch 'refs/remotes/Cocoanetics/develop' into jan/demo