Update to TW 5.2.x

[offray]

TiddlyWiki 5.2.x has a lot of important improvements. In particular the possibility to save tiddler data directly inside the tiddler, as discussed here. We are using Projectify for project based learning and would be great to be able to have an "answer" tiddler field where learners add the answer of a particular task in a (sub)project.

I will update my teaching wikis by installing Notebook and Projectify over plain TW 5.2.x meanwhile, but is much better if both are officially released as build on TW 5.2.x

Thanks.