EVA-1077, EVA-1092 - Updated read samplers with timeouts
Created by: sundarvenkata-EBI
Some minor changes:
- Added timeouts to the read samplers
- Use a combination of thread number and timestamp to make the random number seed unique across multiple iterations within the same thread - this eliminates bias from database caching
- Updated ranges for chromosome and start_pos in the read samplers
- Added a README file