Birdhouse-finch

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* Add partial support for xclim 0.23 with new indicators
* Add support for land indicators
* Add support for multivariate indicators
* Upgrade PyWPS to 4.2.10
* Fix bug in variable name inference
* Add support for non-standard variable name (univariate case only)

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* fix to chunk regions of subsetted files
* use `cruft` to propagate changes from the birdhouse cookiecutter
* catch documentation build error earlier since doc build is part of regular CI build
* catch tutorial notebooks out of sync with code earlier since also part of regular CI build
* use mock imports to facilitate building docs
* add partial support for xclim v0.21
* add support for shapefiles in `subset_shape`

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* fix to remove realization coordinate from ensembles
* added chunk datasets for local files also
* update xclim to == 0.15.2

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* fix local bccaqv2 files filtering

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* update xclim to 0.15.0
* add french translation of processes abstract and descriptions

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* fix 103 (drs_filename) add defaults when `project_id` is unknown
* drs_filenames: use dash instead of underscores in variable names
* fix 80 frequency attrs of computed datasets