full rewrite with async/await

• tiddlers saved as .ttl resources
• includes migration from .json to .ttl
• upgrade to solid-file-client v1.1.0, solid-auth-client v.2.5.2, solid-file-widget v1.0.0
• popup login : solidcommunity.net/common/popup.html by default

use ttl for tiddlers

v0.2.0

resolved conflicts

v0.1.0

initial version 0.1.0