Handle "adjusted contract" chains per root

piker/brokers/questrade.py

@@ -315,16 +315,27 @@ class Client:
                 contracts.items(),
                 key=lambda item: item[0].expiry
             ):
+                for chain in byroot['chainPerRoot']:
+                    optroot = chain['optionRoot']
+                    suffix = ''
+
+                    # handle QTs "adjusted contracts" (aka adjusted for
+                    # the underlying in some way; usually has a '(1)' in
+                    # the expiry key in their UI)
+                    adjusted_contracts = optroot != key.symbol
+                    if adjusted_contracts:
+                        suffix = '(' + optroot[len(key.symbol):] + ')'
+
                     by_key[
                         ContractsKey(
-                        key.symbol,
+                            key.symbol + suffix,
                             key.id,
                             # converting back - maybe just do this initially?
                             key.expiry.isoformat(timespec='microseconds'),
                         )
                     ] = {
                         item['strikePrice']: item for item in
-                    byroot['chainPerRoot'][0]['chainPerStrikePrice']
+                        chain['chainPerStrikePrice']
                     }
 
         # fill out contract id to strike expiry map