Adding support for CROSS+ISOLATED margin accounts!

• Operation "account" will now display the summarization of the 3 wallets: SPOT+CROSS+ISOLATED.
  • New sub-operation "account/spot" that will display SPOT account summary.
  • New sub-operation "account/cross" that will display CROSS MARGIN account summary.
  • New sub-operation "account/isolated" that will display ISOLATED MARGIN account summary.
• Operation "orders/open" will now display all current open orders from 3 markets: SPOT+CROSS+ISOLATED.
• Operation "orders/table" will now fetch and save finished/done orders from 3 markets: SPOT+CROSS+ISOLATED.
  • Greatly improved the performance and only fetching for new orders when the account balance changes.
  • Increased max items per poll from 100 to 1000 every 10 minutes.
• Operation "orders/done" will now require at least ONE sheet in the spreadsheet with the "orders/table" operation in it.
  • It will fail if you don't have any!
• Some other fixes and overall improves.. enjoy!