Xsar

What's Changed
This new 2022 release will provide the users a nice overview of the mapped SAR Sentinel-1 product into `xarray-datatree` to support groups/nodes of variables.
The original `xarray.Dataset` containing the high resolution variables is still available for users but extra `xarray.Dataset` from .xml annotations are now provided to the users. These annotations are :
- Doppler estimates,
- bursts information,
- image information,
- low resolution geo-location,
- FM rate information,
- ...etc...

Rationales
The main motivations for this release are:
- making `xsar` outputs more self discoverable
- starting to separate as much as possible the decoding of the SAR product and the "interpretation layer" (i.e. interpolation, calibration denoising). In particular this release will enable expert SAR users to perform their own operations on the data using directly the annotations.
- keeping the traceability of each variable in `xsar` using:
- the attributes `origin` (xpath),
- the .xsd files to have official ESA definition of variables
- keeping the exact same names for the variables
Disclaimer
For now the datatree v0.0.9 is not supporting the [double mutability](https://gist.github.com/TomNicholas/01c5a74ffbdef4e63bd61b2a2cabbae0), it means that only the changes in the `datatree` will affect the `dataset`s but opposite way is not yet supported (see: https://github.com/xarray-contrib/datatree/issues/80 ).
It means that modifications done on the`dataset`s should be `assign` explicitely with such syntaxe:
`datatree['measurement'] = datatree['measurement'].assign(dataset)`

Contributors
agrouaze , thanks to keewis for his hints and to lanougue for his feedbacks

What's Changed
* use s1meta.pixel_axtrack_m for Sentinel1Dataset.pixel_axtrack_m by oarcher in https://github.com/umr-lops/xsar/pull/102


**Full Changelog**: https://github.com/umr-lops/xsar/compare/v0.8.2...v0.8.3

What's Changed
* manual trigger conda-feedstock workflow by oarcher in https://github.com/umr-lops/xsar/pull/92
* update conda release documentation by oarcher in https://github.com/umr-lops/xsar/pull/93
* fix install doc by oarcher in https://github.com/umr-lops/xsar/pull/94
* Update conda-feedstock-check.yml by oarcher in https://github.com/umr-lops/xsar/pull/95
* Update conda-feedstock-check.yml by oarcher in https://github.com/umr-lops/xsar/pull/96
* Update conda-feedstock-check.yml by oarcher in https://github.com/umr-lops/xsar/pull/97
* map_raster, to map a raster onto the xsar grid by oarcher in https://github.com/umr-lops/xsar/pull/98
* improved rasters (remote url and projection) by oarcher in https://github.com/umr-lops/xsar/pull/101


**Full Changelog**: https://github.com/umr-lops/xsar/compare/v0.8.1...v0.8.2

Tny update to incluse `config.yml` in package directory, to allow conda-feedstock workflow to run

* Fix pixel_axtrack_m for GRD product
* Allow reprojection
* Better conda deps handling

What's Changed
* Fix bug libgdal.30.so in ubuntu and macOS test workflow by alevieux in https://github.com/umr-lops/xsar/pull/29
* allow masks to be defined at class level (to set defaults masks) by oarcher in https://github.com/umr-lops/xsar/pull/31
* add variables to dataset from raster files (ecmwf) by oarcher in https://github.com/umr-lops/xsar/pull/32
* Add 'history' attributes to variables with xpath from xml files by oarcher in https://github.com/umr-lops/xsar/pull/35
* improved xpath history by oarcher in https://github.com/umr-lops/xsar/pull/36
* add missing annotation parameters needed for SLC TOPS reading by agrouaze in https://github.com/umr-lops/xsar/pull/27
* Revert "add missing annotation parameters needed for SLC TOPS reading" by oarcher in https://github.com/umr-lops/xsar/pull/37
* allow chunking on raster variables, and dn at low res by oarcher in https://github.com/umr-lops/xsar/pull/39
* suppress stepping in ground_heading by oarcher in https://github.com/umr-lops/xsar/pull/41
* add s1meta.orbit by oarcher in https://github.com/umr-lops/xsar/pull/44
* add s1meta.image by oarcher in https://github.com/umr-lops/xsar/pull/48
* add s1meta.bursts as DA without geopandas at this stage by agrouaze in https://github.com/umr-lops/xsar/pull/55
* add s1meta.geoloc by agrouaze in https://github.com/umr-lops/xsar/pull/46
* add s1.meta.azimuth_fmrate by agrouaze in https://github.com/umr-lops/xsar/pull/53
* add missing annotation parameters needed for SLC TOPS reading 2 by agrouaze in https://github.com/umr-lops/xsar/pull/38
* add s1meta.doppler_estimate (Doppler Centroid Estimate annotations) by agrouaze in https://github.com/umr-lops/xsar/pull/51
* minor install documentation fix by oarcher in https://github.com/umr-lops/xsar/pull/59
* allow scalar input for xsar.utils.to_lon180 by oarcher in https://github.com/umr-lops/xsar/pull/60
* safe_dir function to retrieve local path from safe name by oarcher in https://github.com/umr-lops/xsar/pull/63
* do not import ipython backend if notebook is not used by oarcher in https://github.com/umr-lops/xsar/pull/66
* add notebook example for batch processing on datarmorifremer by oarcher in https://github.com/umr-lops/xsar/pull/67
* allow metadata in notebook to skip nbsphinx execution by oarcher in https://github.com/umr-lops/xsar/pull/68
* patch WV noise vector for IPF2.9X by agrouaze in https://github.com/umr-lops/xsar/pull/64
* xsar_batch_datarmor.ipynb update by oarcher in https://github.com/umr-lops/xsar/pull/69
* revisit of rasterization from annotations by agrouaze in https://github.com/umr-lops/xsar/pull/57
* call `self._load_rasters_vars()` once needed variables are available by oarcher in https://github.com/umr-lops/xsar/pull/78
* enable bursts() method for multidataset by agrouaze in https://github.com/umr-lops/xsar/pull/79

New Contributors
* agrouaze made their first contribution in https://github.com/umr-lops/xsar/pull/27

**Full Changelog**: https://github.com/umr-lops/xsar/compare/v0.6...v0.7