Support for pyxl about metapensiero.pj HOT 2 OPEN

I must say that I don't like so much putting HTML into python code because of the mix of the two "major modes" and the fact that really that HTML is a lie. That said, I'm not using JavaScripthon at the moment (I haven't had the time to complete the work on the "MacroPy" branchso I may consider semething that will broad (maybe) its usage. Are you using It? BTW, speaking of MacroPy, It has included pyxl some time ago, maybe this notation is sufficient? It will offer major flexibility without the need to change pj an MacroPy it's already a dependency.

from metapensiero.pj.

Sorry, some kind of adaptation of pj would be required anyway, but it's unclear what would be the best path to follow: the first would be to translate the Python code but not the HTML, leaving further translation to the JS transpiler, the other would be to convert HTML to Python using MacroPy3 (or pyxl). I would prefer this latter one, but we need to find a generic way to tell pj to omit the conversion of the macropy imports or to import and apply the macropy pre processing by using maybe a comment or some other kind of notation

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