stag-join.pl - joins two stag files together based around common key
stag-join.pl -w xml country/city_id=capital/capital_id countries.xml capitals.xml
stag-join.pl -w itext gene/tax_id=species/tax_id genedb.itext speciesdb.itext
Performs a relational-style INNER JOIN between two stag trees; this effectively merges two files together, based on some kind of ID in the file
xml assumed as default
currently not event based, so may not be memory efficicent. could be easily rewritten to be event based
This script is a wrapper for the method
Data::Stag->ijoin() =cut