xpath.py: get(): Create attrs: Fixed bug where attrs were created with last_only on, which caused attrs to get created multiple times if there were multiple attrs of the same name but different values, becase the last_only optimization would only check the last attr of that name

mappings/DwC2-VegBIEN.specimens.csv: *Latitude/*Longitude: Use new _toDouble to convert strings to doubles (needed for by_col)

schemas/functions.sql: Added _toDouble

bin/map: When calling xml_func.process(), pass DB connection if available

xml_func.py: process(): If DB with relational functions available (passed in via db param), call any non-local XML functions as relational funcs

sql.py: put(): pkey param (now pkey_) defaults to table's pkey

bin/map: by_col: In debug mode, print stripped XML tree that guides import

vegbien_dest: Fixed bug where there was a missing line continuation char before schemas var

sql.py: DbConn: Fixed bug where schemas db_config value needed to be split apart into strings. Fixed bug where current_setting() returned a value rather than an identifier, so it had to be used with set_config() instead of SET, and run after SET TRANSACTION ISOLATION LEVEL. Moved Input validation section before Database connections because it's used by Database connections.

Regenerated vegbien.ERD exports