#505 Jush performance causes lag on large queries

[J V]

On large queries jush will drop performance like a rock. Each keypress in a textarea can end up taking 10 seconds on a programatically generated query.

Suggestions:

• Stop highlighting if the text length goes over ~2k characters
• Change jush to only look for changes near the cursor
• Use something like setinterval to keep the UI responding while jush calculates the correct output (And cancel and restart the calculation on input)
• "Just make it faster" (As quoted most technophobes)

[Jakub Vrána]

JUSH stops highlighting for input longer than 10 000 characters.