Move Inkscape to alumni (closes #41)

[stuartpb]

https://inkscape.org/news/2020/05/04/introducing-inkscape-10/

[mahmoud]

Ah, sad day, Stuart. But reality being what it is, Inkscape should probably join the alumni, not disappear from the list completely. A legacy this great must not be forgotten.

You can see what keys should be added to the yaml by looking at the JSON of another emeritus entry, like OpenSSL:

zerover/projects.json

Lines 1762 to 1773 in 1b6dba2

	{
	"emeritus": true,
	"first_nonzv_release_date": "2010-03-29",
	"first_release_date": "1998-12-23",
	"first_release_version": "0.9.1",
	"is_zerover": false,
	"last_zv_release_version": "0.9.8n",
	"name": "OpenSSL",
	"release_count_zv": 51,
	"star_count": 6706,
	"url": "https://github.com/openssl/openssl"
	},

[stuartpb]

Done. While the release was only announced today, the notes state that it shipped on the 1st, so that's the date I went with.

[mahmoud]

Thank you! I appreciate the work and the 0-wait turnaround. :)