**Changes** - Updated VTL mapping from TimePeriod to Time_Period
**Bugfixes**
2.6.5
------------------ **Added**
**Changes**
**Bugfixes** - Fixed possible unhandled exceptions in reading ContentConstraints
2.6.4
------------------ **Added**
**Changes** - Changed VTL Mapping on ObservationalTimePeriod and StandardTimePeriod to TimePeriod - Improved sdmxthon comprehensive example notebook
**Bugfixes** - Fixed circular import on webservices and API
2.6.3
------------------ **Added**
**Changes**
**Bugfixes** - Fixed bug on writing if Attribute Descriptor is not present - Fixed bug on reading Structure Specific datasets with only one record - Fixed bug on reading Generic with no Attributes at OBS level
2.6.2
------------------ **Added** - Added tons of webservices queries and query builders.
**Changes**
**Bugfixes** - Fixed bug on Series writing if Attribute Descriptor is not present (56)
2.6.1
------------------ **Added** - Added flag for use_dataset_id on get_pandas_df