goodvibes: update to 0.7.1 and adopt.

[mobinmob]

Also:

• change license (upstream change).

General

• This is a new package and it conforms to the quality requirements

Have the results of the proposed changes been tested?

• I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
• I generally don't use the affected packages but briefly tested this PR

[paper42]

from the changelog:

• Drop dependency libamtk.

[mobinmob]

from the changelog:

• Drop dependency libamtk.

Done :)