almost there

Today I added properties and object layer. Also reorganized a bit: Tiled Layer and Object Layer now have their own namespaces. I also cleaned up the content pipeline, removed duplication etc. Then I changed the class Layer to be a structure, but I´m not sure if I like that. Nevertheless, couldn´t find any errors so I uploaded it as v0.6a.
I think I´ll add tile spacing/margin tomorrow, can´t be too hard, can it? Some compression/encoding formats are also still missing...Then all features will be included and I might add some fancy stuff like...well dunno. Maybe someone else can think of something?