support snaked grid scans
support snaked grid scans

tcspain/SynchWeb,DiamondLightSource/SynchWeb,DiamondLightSource/SynchWeb,tcspain/SynchWeb,DiamondLightSource/SynchWeb,DiamondLightSource/SynchWeb,tcspain/SynchWeb,DiamondLightSource/SynchWeb,tcspain/SynchWeb,DiamondLightSource/SynchWeb,tcspain/SynchWeb,tcspain/SynchWeb