### Features
* Support alembic migrations 
* API: More fine grained handling of temporal data
* Support metadata version 1.4
* Metadata upload and download via API (#461)
* Add contribute file (#469, #505)
* Cover versioning tables in migrations
* Factsheets: General remodeling of factsheets (#419)
* Factsheets: Make links clickable (#74)
* API: Explicit column handling (#484)
* Add tutorials app (#489)

### Bugs
* API: Fixed negation in where clauses
* API: Fixed metadata tooltips
* API: Fixed alias handling (#482
* Factsheets: Remove duplicates, typos, naming errors, display errors (#311, #401, #38, #100)  
* Factsheets: Change or add field text or type (#311, #36, #50, #82, #84, #85, #95, #94, #90)

### Bugs
### Features

* Add tutorials app (#489)

### Bugs

Remove old text from changelog
Remove old text from changelog
