Add backend, config, interface. Add tests for handlers and handler registration.
Add comments to difficulty of generalising MergeSamFiles
Add final fixes to basic handler functionality
Merge branch 'feature/target_generator_interface' into develop
Add handler and functions to setup config
Use target_iterator in pipelines. Add global settings to config
Add function _make_arglist to job runners
Make test_wrapper.py only assert command line formats
Update main tests. Fix bugs in config parsing
Delete baits and targets
Fix error in _make_arglist
Fix bug in fastqc
Update run script and basic config
Add variation functions
Add vcf and fastqc output to haloplex
Add small test data set to test/data and add tests
Add pipe tests, fix some failing tests
Fix instantiation error in config. Add cnf.clear in tests
Add dummy tasks to fix config_file in test_config.py
Update docs