sql.py: log_debug_none: Fixed bug where needed to take kw arg level to work with verbosity-based logging

bin/map: Allow fractional verbosity values

sql.py: Functions that version created tables, functions, etc. if they already exist: Use (default) exc_log_level=4 to hide the unsuccessful attempts to create items that already exist and show only the successful attempt

sql.py: DbConn.run_query(): Added exc_log_level param to specify a different log_level if the query throws an exception. This will useful for functions that version created tables, functions, etc. if they already exist.

sql.py: DbConn.run_query(): Removed no longer accurate doc comment, because that functionality is now in module-level run_query()

sql.py: Specify log_levels for minor queries so they can be excluded from the debug output

sql.py: select(): Pass log_level to run_query()

sql.py: DbConn.run_query(): Added log_level param and pass it to self.log_debug(). run_query(): Pass extra kw_args to DbConn.run_query() (via run_raw_query()) so that caller can specify log_level.

sql.py: run_query_into(): Fixed bug where "temporary tables cannot specify a schema name"

bin/map: Switched to verbosity-level-based system of logging. verbose is now an integer, and debug sets the minimum verbosity to 2.