Thanks for the comment. Yes the lack of testing does worry me, but it's good to know they are addressing that missing piece of the jigsaw. At least you can lock down the version you want and know works and can upgrade in safety only committing if you know it all still works through you're own testing, but nothings foolproof.
There's certainly a large number of frameworks out there, these are the ones that looked the most interesting to me but I'll be sure to have a look at the ones you've mentioned, thanks.
I'm not too worried about the lack of component bundling customisation but it's good for people to know these things.
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