changes:
- removed *Readout and *Input block modes (use protectedCanvasPart instead)
new features:
- options gui improvements
- url specific values can be added by hitting enter in the input
- highlight "hide" icon when "tabbing" to it
- made url specific values manageable with "tabbing"
- added setting "protected canvas part" to decouple block mode from part
- added "share persistent randomness between domains"
fixes:
- constant rng did not work properly when protecting input
known issues:
- if a data URL is blocked the page action button does not appe