Datacube

- Improved ingester task throughput when using distributed executor
- Fixed an issue where loading tasks from disk would use too much memory
- `GeoPolygon.to_crs` now adds additional points (~every 100km) to improve reprojection accuracy

- Ingester can now be configured to have WELD/MODIS style tile indexes (thanks Chris Holden)
- Added `--queue-size` option to `datacube ingest` to control number of tasks queued up for execution
- Product name is now used as primary key when adding datasets.
This allows easy migration of datasets from one database to another
- Metadata type name is now used as primary key when adding products.
This allows easy migration of products from one database to another
- `DatasetResource.has` now takes dataset id insted of `model.Dataset`
- Fixed an issues where database connections weren't recycled fast enough in some cases
- Fixed an issue where `DatasetTypeResource.get` and `DatasetTypeResource.get_by_name`
would cache `None` if product didn't exist

- Added origin, alignment and `GeoBox`-based methods to `model.GridSpec`
- Fixed satellite path/row references in the prepare scripts (Thanks to Chris Holden!)
- Added links to external datasets in Indexing Data
- Improved archive and restore command line features: datacube dataset archive and datacube dataset restore
- Improved application support features
- Improved system configuration documentation

- `GridWorkflow.list_tiles` and `GridWorkflow.list_cells` now
return a `Tile` object
- Added `resampling` parameter to `Datacube.load` and `GridWorkflow.load`. Will only be used if the requested data requires resampling.
- Improved `Datacube.load` `like` parameter behaviour. This allows passing in a `xarray.Dataset` to retrieve data for the same region.
- Fixed an issue with passing tuples to functions in Analytics Expression Language
- Added a `Recipes` section to the documentation containing useful code snippets
- Reorganized project dependencies into required packages and optional 'extras'
- Added `performance` dependency extras for improving run-time performance
- Added `analytics` dependency extras for analytics features
- Added `interactive` dependency extras for interactivity features

- Added bit shift and power operators to Analytics Expression Language
- Added `datacube product update` which can be used to update product definitions
- Fixed an issue where dataset geo-registration would be ignored in some cases
- Fixed an issue where Execution Engine was using dask arrays by default
- Fixed an issue where int8 data could not sometimes be retrieved
- Improved search and data retrieval performance

- Improved spatio-temporal search performance. `datacube system init` must be run to benefit
- Added `info`, `archive` and `restore` commands to `datacube dataset`
- Added `product-counts` command to `datacube-search` tool
- Made Index object thread-safe
- Multiple masking API improvements
- Improved database Index API documentation
- Improved system configuration documentation