PEP 8
Add TestRowChanges
Add check_for_conflict
Update check_for_conflict
Add old_value, new_value
Rebuild to allowed_replacement
Check for equal values
Import lm_kw
Allow for decimal, float
Check for rounding problems
Protect against converting None to Decimal
Use allowed_replacement
Add lxa_41_inst
Add lxa_42_inst
Add ptn_ogolnie_liczniki_poboru
Add dq_ogolnie_liczniki_poboru