"soon"
Yeah :-). Anyway, I really think that all the parser pull requests should be merged soon (notice - no apostrophes) to get some testing. If there are problems, we can either report them upstream and get a fixed version or just revert back to the old parser - that should be mostly trivial.
The only parser I'd like to have a look at first is #3034 and test it on Raspberry Pi to see how it works on slower hardware.