Started working a selfish feature: I use an underpowered NAS to run my sync server, and each sync, it spends 10 seconds trying to see if Latex files need to be regenerated. Since latex is not even installed, that's a waste, and I'm now writing code to detect this situation and skip it.
Some scheduler tweaks: previously, when you were studying new cards and switched to a different saved set which included scheduled cards, Mnemosyne would keep on showing the last new card you were studying, instead of showing the scheduled cards immediately.
Confusing Mnemosyne behaviour for some people: if you select a saved set, and then activate some tags, this selection will not get saved back to the saved set before you click 'save' again (in effect, Mnemosyne has taken a copy of the set).
This behaviour is now explained better with run time tooltips.