Dspyce

* Bug fixes in the RestAPI-class and DSpaceObject
* new sub-package for entity modells. It might mostly be helpful to check own developed models through having a graphical representation. Check the [package README](https://github.com/dspace-unimr/dspyce/blob/dsypce-v0.0.3/dspyce/entities/README.md) for further information.

dsypce-v0.0.2
This is the 0.0.2 release of the _dspyce_ python package. It is and will be a work in progress adapted to the current needs.

* Small bug fixes in the _RestAPI_-class and the _read_saf_package_ function.
* New representation of _MetaData_ in the _DSpaceObject_ class
* The _MetaData_ class inherits now from a python _dict_ and stores all metadata fields in the following format:
json
{"<tag1>": ["value": "<value>", "language": "<value>"]}

* This ensures better compatibility with the DSpace RestAPI and enhances code-readability
* new test class for the saf-exporter and -importer
* api-endpoint check in RestAPI class


dsypce-v0.0.1
This is the initial release of the dspyce python package. It is and will be a work in progress adapted to the current needs.