Hi there, Bjorn and guys. In the past I’ve supported both embedded and external tilesets or TSX files and I was wondering if we’re at the point yet where I can safely assume that maps will always reference external TSX files yet.
Sorry I’ve been so quiet lately. The holiday rush really did me in! 
Even though I’d really like to deprecate and eventually remove them, currently Tiled still supports embedded tilesets. Many people still use them and there are probably people who prefer this approach, especially if they don’t use any of the meta-information you may associate with a tileset or its tiles anyway.
People can still embed tilesets in two ways:
It looks like things will stay this way also for Tiled 1.2, but for 1.3 I’d like to add support for projects, in which case I’d prefer to no longer have to deal with embedded tilesets. Hopefully it will be the right time, because the project support should make dealing with separate assets easier (whereas embedded tilesets would be kind of “hidden”).
Got it. Thanks for the update, Bjorn.