Suggestion: Add caching to contract

[jefflau]

Cache the code in the contract (maybe have a button to revert to default or clear) so when you go to another tab, the code doesn't disappear. When going through the tutorials you may need to paste in your own public address or one of the other contract addresses and if you're already writing the contract you can't go back and check without the contract disappearing

[evertonfraga]

Closing, as it is fixed.