* Integrated operation framework
* Added operations:
* `adjust_spatial_attrs`: Adjusts global spatial attributes
* `adjust_temporal_attrs`: Adjusts global temporal attributes
* `coregister`: Coregisters two datasets
* `detect_outliers`: Detect outliers in a dataset
* `merge`: Merges up to four datasets into one
* `normalize`: Normalises geo- and time-coding
* `resample`: Resamples a dataset to a new resolution
* `subset_spatial`: Creates a spatial subset
* `subset_temporal`: Creates a temporal subset
* `subset_temporal_index`: Creates a temporal subset based on indices
* `tseries_point`: Extracts a time series for a point
* `tseries_mean`: Extracts a time series for a dataset's mean
* Added functionality to manage operations:
* `get_op`
* `get_op_meta_info`
* `list_operations`
* Added functionality to manage data:
* `add_local_store`
* `add_store`
* `find_data_store`
* `get_output_store_id`
* `get_store`
* `get_search_params`
* `get_supported_formats`
* `list_datasets`
* `list_ecvs`
* `list_ecv_datasets`
* `list_stores`
* `open_data`
* `remove_store`
* `search`
* `set_output_store`
* `write_data`
* Integrated implementation of data stores into ESA Climate Toolbox
* Extended Documentation with descriptions of newly added API