Version 1.1.0
- Fixes to_dataframes and to_gdx memory leaks
- Respects GAMS_DIR environment variable
- Additional bug and warning fixes
- New feature GdxSymbol.dataframe can now be set using just the GdxSymbol.dims columns; in that case the value columns are filled in with defaults. Caution GdxSymbol.num_dims can no longer be changed once it is set to a value > 0 (via setting GdxSymbol.dims or GdxSymbol.dataframe) or GdxSymbol.num_records > 0.