loquat v2.0.0-M7

• Data mappings:
  • #45: Changed DataMappings remoteInput/Output from records to simple Maps
  • Added an option to the config to switch on/off input objects existence check
  • #44: Renamed DataMapping's id to label
  • #47: Added a logger message and some kind of progress output for the input objects existence check
  • #50: Instead of checking input objects object metadata, listing objects with the given prefix
  • #52: Added a check for missing/non-needed input/output data keys in the datamappings
• Data processing:
  • #51: Fixed input objects handling by passing the map of (dataKey.label -> fileLocation) from worker to the processing context; this way context.inputFile lookup doesn't rely on conventions and return the actual file location
• Self-termination:
  • #48: Added a time deadline for SQS polling
  • Added some logging and exception handling to the polling
• Other fixes:
  • #49: Removed any worker instance state tagging for now; was causing RequestLimitExceeded on a big autoscaling group with quick tasks
  • #43: Changed log messages for downloads/uploads