Reslease 0.6

Building elf documentation, implementing segmentation stitching functionality an dbug fixes.

What's Changed

Metric visualization by @constantinpape in #105
Add scripts for metric visualization per object by @anwai98 in #104
Update legacy editable install for elf by @anwai98 in #103
Fix issues and add doc strings in tracking functionality by @constantinpape in #107
Fix parallel.label and add documentation strings by @constantinpape in #108
Add label stitching functionality by @anwai98 in #106
Update doc strings by @constantinpape in #109
Build documentation by @constantinpape in #110
Bump version to 06 by @constantinpape in #112

Full Changelog: 0.5.2...0.6.0