Rewrite Criteria class.
Add show and to_s methods for pretty-printing.
Remove unnecessary keywords attribute reader.
Remove unneeded Params class.
Remove empty line.
Define hash for jobmailers; store search criteria for each.
Add an attribute reader for jobmailers.
Change jmid parameter name to id for simplicity.
Remove obsolete search parameter symbols.
Rename parameter desc to description.
Rename jobmailers to jobsearches (more accurate name: no results are emailed).
Rename module JobMailer to JobSearch.
Add test.yml containing a single search for testing.
Add extra options in Opts class.
Working scraper script.