Add ability to input own indexes to demultiplexing script
Add ability to input own spacer sequences to collapsing script
All scripts should output their version number to the log file
The argparse intro line should take version number from version variable
Each script should have a --version/-v argparse option, fed off version
In Decombinator, the AmbiguousBaseCall(Barcode) filter is more properly named just a count - perhaps add an additional layer of optional filtering here?