Datasource adapter
The problem
There is no way for now to use kanban board with anything but gitlab. Most of my personal projects are hosted on gitlab and this is ok to work with them, but there are bunch of on github, and this is the real problem - I'm trying to work as always - make an issues, analyze, decide what to go on for now, do it, test etc, and I've ended with terrible mess of issues. There are a lot of similar tools that integrate with github, but for now I can not see any reason to not implement github support and "plain" mode - without repo, e.g. store the whole board and issues in plain files.
The solution
There is a suitable design pattern - datasource adapter, so we should first identify the common interface for any data source type - API, database, files etc, and implement required data sources. Speaking about my personal needs - we definitely should support github to.