decide what DB to use for main data storage

[woolfg]

database which supports more complex queries (e.g. sqlite or postgresql)

[woolfg]

• mysql smaller SQL features set
• sqlite very powerful
• postgresql very powerful, all sql features

we would start with sqlite but there is no hosted version available. postgresql is more powerful in terms of analytical queries but not very well known to us, therefore, we decided to start with mysql.

[woolfg]

mysql on planetscale created and already tested in #41