React to i_s column name changes
No fractional TIME
Fix transactional ddl, index length adapter capability values
Replace broken insert_fixture() with proper reset_pk_sequence!()
Reject rename of non-existing column
Fix columns, index columns lookup queries
Minor type clamping fix
Reject illegal arguments to remove_column
Translate FK exceptions
Massive cleanup, reorganization, fixes and commenting.
Fix binary and string quoting
Fix number of arguments to reset_pk_sequence!
Hook everything up for proper binary support.

Including escape on SQL input, unescape on output and
send as binary via parameter. Layer currently buggy.
Return id from insert APIs
Update test patch file
Support add_column of primary_key type
Don't unnecessarily change type aliases
Update current values in change_column_null() if default is provided
Downcase type string so SchemaDumper handles decimal.

Move FdbSqlColumn into module and its own file and implement
extract_limit for bigint.
Implement StatementPool and proper prepared statement lifetime