Added
- `pyerrors` can now deal with replica with different gapsizes.
- String formatting method for `Obs` added.
- `t0` can now be extracted from hadrons files.
- `w0` can now be extracted from openQCD files.
- `pandas` SQL export can now deal with `None` entries in columns with `pyerrors` datatypes.
Fixed
- `dobs` submodule is now correctly imported.
- Bug in merging of `Obs` fixed.
- Bug in `rapidjson` dict output fixed.
- String conversion of `Obs` can now handle special `dvalue`s
- Bug in sfcf name sorting fixed.