Fixed lagginess for notes with many icons #618
Merged
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Added a small cache for font size that expires after 2 seconds. if many re-renders of inline icons happen at once (every icon in every internal link onscreen gets rerendered in the dom whenever you type), it won't spend a lot of time in this method any more.
I tried for a while to get at the root of the problem which is that it re-renders all the icons onscreen everytime you type anything, but wasn't able to get that to work well, so went with this simpler fix.
Fixes issue #602
See before/after examples:
BEFORE:
iconize_beforefix.mp4
AFTER:
iconize_afterfix.mp4