Release v0.4.0 · DHI/terracotta

This release introduces some breaking changes in the Terracotta API and deployment workflow.

Changes

Added a Zappa callback that ensures consistency of settings and remote database before deployment.
The Terracotta version used to create a database is now added to the database and checked on connection.
Terracotta will now warn when calling driver.insert on a raster file that is not a cloud-optimized GeoTiff.
We now support proper logging, including logging to a file.
Preview images for datasets can be requested via /singleband/{keys}/preview.png and /rgb/{keys}/preview.png.
The returned tile size is now configurable from the URL for both /singleband and /rgb.
The preferred Zappa settings format is now TOML.
It is now possible to add a plaintext description of the keys in a Terracotta deployment. The response format of /keys is changed to
```
[
    {
        "key": "key_name",
         "description": "key description"
    }
]
```
where description is optional.
Various optimizations and bug fixes.