Eo-learn

- Switched from "data source" to "data collection" terminology according to changes in `sentinelhub-py` and Sentinel Hub services.
- Improvements in `SentinelHubInputTask` to better support any type of data collection. Using new `DataCollection` class from `sentinelhub-py`.
- Extended `ExportToTiff` and `ImportFromTiff` tasks to support writing and reading from AWS S3 buckets. Implemented in cooperation with wouellette.
- Implemented `EOPatch.merge` method and `MergeEOPatchesTask` task for merging the content of any number of EOPatches. Implemented in cooperation with wouellette.
- Deprecated `EOPatch.concatenate` in favour of `EOPatch.merge`.
- Added `eolearn.features.DoublyLogisticApproximationTask`, contributed by bsircelj.
- Optional parameter `config` for `SaveTask` and `LoadTask` to enable defining custom AWS credentials.
- Fixed a bug in `eolearn.features.ValueFilloutTask`.
- Started releasing `eo-learn` (sub)packages also as wheels.
- Minor improvements and fixes.

- Support for `geopandas` version `0.8.0`
- Added a [notebook](https://github.com/sentinel-hub/eo-learn/blob/develop/examples/custom-script/machine-learning-evalscript.ipynb) with an end-to-end example on how to transform a ML-model into an evalscript and run it with Sentinel Hub service
- Added `eolearn.features.ClusteringTask`, contributed by bsircelj
- An option to define a custom log filter for `EOExecutor`
- Data mask obtained by `SentinelHubInputTask` has now boolean type instead of uint8
- Updates of some example notebooks
- A few minor fixes

- Added eo-learn dockerfiles and deployed official eo-learn docker images to [Docker Hub](https://hub.docker.com/r/sentinelhub/eolearn)
- Added `compress` parameter to `ExportToTiff`, contributed by atedstone
- Minor fixes

- Updated example notebooks - replaced OGC service tasks with Processing API service tasks
- Deprecated tasks that download data from Sentinel Hub OGC service
- Minor fixes in `SentinelHubInputTask` and `AddCloudMaskTask`

- Updates of `SentinelHubInputTask`:
* Support for new s2cloudless precomputed cloud mask ([more info](https://medium.com/sentinel-hub/cloud-masks-at-your-service-6e5b2cb2ce8a))
* Support for `config` parameter
- Updated `SI_LULC_pipeline` notebook.

- Added support for `geopandas` version `0.7.0`.
- Fixed a bug in `eolearn.core.eodata_io.save_eopatch` function.
- Improvement in `eolearn.mask.MaskFeature` task - it now works also works with time independent feature types.
- A minor improvement in `eolearn.io.SentinelHubInputTask` task.