Release notes:
- Tags are cut off at 255 characters (#26)
- Tags are merged with ; as separator as described in the OSM standard (#28)
- Releases are automatically published on dockerhub and available as roelderickx/ogr2osm (#30)
- Returning None from filter_layer does not throw an error anymore (#31)
- Parameter added to make the z-value available as a tag (#36)
- Forced the gdal library to throw exceptions, as will be the default in gdal 4 (#41)
- Fixed bug in string representation of longitude and latitude when they are natural numbers (#42)
- Remove deprecated translation method get_unique_node_identifier (#43)