fix for creating temporary files on Windows.
bugfix of #52
HOTFIX #51: Bug with latest datatable version
More stable and reliable Version of sync_diffs mode for sending data. Respects scarce resources on the mysql server.
creating temorary removing partitions and system versioned from temporary tables.
new mode for send data: sync_diffs: update differences and delete deprecated rows.
new mode for delete data: in_delete_col: mark rows to delete, then delete.
bugfix for temporary tables: now properly removes tables.
bugfix for upstream bug in mariadb: sending diffs needs persisten tables instead of temporary.
bugfix in send_data with mode [update|insert|replace]_diffs: same as #36
new function in database: send_delete for deleting rows in a database.
send_data in mode 'update' now allows to send only partial subset of columns.
see #35: New send_data modes: update_diffs, insert_diffs, replace_diffs
see #27 for bugfix in Database class when specifiying a port in a credentials object.
the argument 'creds' in the init method of a database class is now deprecated
the argument 'db_url' can now handle str and dict type; str is a sqlalchemy url; a dict a credentials object
credential objects can now have additional fields which will be used as elements in connect_args for sqlalchemies create_engine: see #12
see #36 for bugfix while sending an empty frame
see #32 for bugfix in send_query for empty result sets
see #30: fixes handling of None/NULL values in columns
see #22 for performance improvements for send_query when reading large datasets
support for pymysql and mysqldb
see #28 for bugfix when sending escape sequences
see #24 for bugfix while writing to csv
see #20 for memory efficient send_data using datatable
see #11 for motivation on moving dialect specific implementation into extras
see #15 for mysql specific send_data via load data local infile
added mysql backend for specific mysql and mariadb support
added possibility for send_data to use infile for mysql databases
changed static loading of the connection class to a flexible model, allowing to override connections for different SQL drivers
added handling of percentage signs
added possibility of automated comment removal
ensured the compatibility of raw SQL code with code sent via dbrequests
renamed to dbrequests
implemented send_data and send_query wrappers for pandas sql-functionality