Merged the report-masked hotfix into the development branch.
Splign output in BED format now stores unique ids for same transcripts that align to several places in one or more scaffolds.

NB! This is potentially incompatible with official BED format or some tools.
When provided an official BED file with similar function, will change accordingly.
Added files for testing of the splign module.
Advanced parsing of splign files is now handled within the splign.py module.
UID format, location data type (now dict).
splign2bed.py is now just a wrapper for lib.splign.as_bed()