* mostly restored the tiled importer unit tests
* code cleanup
* code cleanup
* almost got tiled maps serialization independent of the content pipeline
* refactored the tiled map content importer so that tiled maps can be loaded at runtime
* code cleanup
* removed nuspec files
* experimenting with an XML based GUI markup parser
* a few more markup parser features
* finally got a working open file dialog
* experimenting with markup bindings
* attached properties
* working on the gui stuff again
* working on a better textbox
* multiline textboxing
* new text box is really coming along
* removed the content explorer experiment
* restored the old gui demo back to the way it was before (for now)
* Change from storing layers by index to Dictionary key
Models are now stored with the `TiledMapLayer` they are part of.
* Allow render calls via TiledMapLayer
* Add TiledMapGroupLayer and model build recursion for groups
* Add rendering support for TiledMapGroupLayer
* Update TiledMapReader to read TiledMapGroupLayers
* Update Features Demo to Include a Map with a Layer Group
* Update TiledMapWriter and TiledMapProcessor to Support Groups
* Update TiledMap to Report Layers Correctly
* Demo.SpaceGame working
* Delete unused files, update icon
* Demo.StarWarrior building
* Removed unused files
* Demo.Features Collision
* Platform Demo Building
* Nuclex Gui Project
* got the old platformer demo running but it's still missing stuff
* Demo.Features added to solution
* Demo.Features building
Currently, most demos don't build and were excluded from the project.
* Demo.Features.NetCore building
* Demo.Features building and running
* First demo usable
* Close button
* Tiles + Sprite Demo
* More demos working
* Fix Back() for new Gui
* Remove old project files
Added comments into the importers and processors to show off what the new code does. Removed unneeded code involving locating external files as `Content` handles this for us automatically.
Added the remaining features of the .TMX Tiled Map format. Removed the parts of the format which aren't needed for rendering, like `TiledMapTerrainContent`. Terrains and the newer WangSets are only used in constructing a map, not for rendering. Added exception throws for non-implemented parts of the format.
Dylan Wilson