I've released a small update to Gemtext. At the moment, I'm working on adding Spartan protocol support to Rogallo, and to do this I need to handle a small extension it makes to Gemtext.
While Spartan is quite different from Gemini in the underlying protocol, it uses Gemtext as the default/standard markup language, but with one small difference. To allow uploaded data that is initiated by the markup, rather than by the server, there is a =: line type. In some respects, this is similar to type 7 items in Gopher maps.
Rather than spin up a whole new library just to support this one small difference, and rather than do some special-case nonsense in Rogallo itself, I've added optional (and turned on by default) support for =:. When encountered, this results in a SpartanPrompt object, which simply inherits from a Link.
Any code that doesn't require this feature can turn it off with the with_spartan_support parameter.