Hello world!

• create the skeleton of an sqlite ODM2 database with create_sql()
• insert time series data using db_insert_results_ts()
• insert measurement data using db_insert_results_m()
• helper functions for controlled vocab terms and site names
• populate sites, people, methods, variables, equipment, organizations, annotation with db_describe_%() functions
• query list of site names, people, methods, variables, equipment, organizations with db_get_%() functions