Release 0.7.0

Upgrade to this version of gravity by using this container image:

ghcr.io/beryju/gravity:v0.7.0

Upgrade to the current JS API Client using

npm i gravity-api@0.7.0

Upgrade to the current Golang API Client using

go get beryju.io/gravity@v0.7.0

What's Changed

• update background by @BeryJu in #778
• Fix API Role restart by @BeryJu in #779
• update lease when device moves to different network by @BeryJu in #777
• More consistent formatting by @BeryJu in #780

Full Changelog: v0.6.19...v0.7.0