How to update a soundset from 2.6 to 3.0

This document describes how to convert freeciv 2.6 compatible soundset to freeciv 3.0 compatible ones.
==Capability==
Capability string of soundspec file must be changed.
[soundspec]
options = "+Freeciv-3.0-soundset"
==Event tag rename==
Event tag e_unit_win is renamed to e_unit_win_def. Update reference to it in the soundspec.
==New event tags==
For the new events, new event sound tags can be added if the soundset aims to be complete. New tags added in freeciv-3.0 are e_my_unit_did_heal and e_my_unit_was_healed.