Queue and Bundle classes ready for integration
All basic functionality is present
- Queue parses database and adds records to bundles appropriately
- Only valid Bundles are returned
	- Retry logic fully functioning - timer determines when a bundle is ready to retry
	- Blacklisted sensor IDs are checked against Bundles - matching ones aren't returned
- Successfully sent records are deleted from the database

Small tweaks will most likely be necessary as more thorough testing is done
Test cases in progress.