Rewrite changelog for v0.19.0
Rewrite changelog for v0.19.0

michaelgeorgeattard/webtorrent-desktop,feross/webtorrent-desktop,webtorrent/webtorrent-desktop,feross/webtorrent-app,feross/webtorrent-app,michaelgeorgeattard/webtorrent-desktop,michaelgeorgeattard/webtorrent-desktop,feross/webtorrent-desktop,webtorrent/webtorrent-desktop,feross/webtorrent-app,feross/webtorrent-desktop,webtorrent/webtorrent-desktop