A naïve static site generator.

#5Explore custom modules in postprocessors

Raku makes it somewhat tricky to deal with modules loaded at runtime, so the only nice way to give postprocessor access to Raku modules is, by default, hard-coding them into Pageling. This is not a good idea, though, as there is no way to predict every possible use case. What should be done instead is to find the best way to handle custom modules, facilitate that for postprocessor developers, and document the whole procedure.