updated changelog with additional hashes

Author: brendancol

CHANGELOG.md

@@ -1,7 +1,7 @@
 ## Xarray-Spatial Changelog
 -----------
 
-## Version 0.1.9 - 4/27/2021
+### Version 0.1.9 - 4/27/2021
 - Deprecated tiles module (#381)
 - Added user guide on the documentation website (#376)
 - Updated docs design version mapping (#378)
@@ -12,10 +12,10 @@
 - Added get_data module and example sentinel-2 data (#358)
 - Added citations guidelines and reformat (#382)
 
-## Version 0.1.8 - 4/15/2021
+### Version 0.1.8 - 4/15/2021
 - Fixed pypi related error
 
-## Version 0.1.7 - 4/15/2021
+### Version 0.1.7 - 4/15/2021
 - Updated multispectral.true_color: sigmoid contrast enhancement (#339)
 - Added notebook save cogs in examples directory (#307)
 - Updated Focal user guide (#336)
@@ -25,7 +25,7 @@
 - Correct warnings (#350)
 - Add flake8 Github Action (#331)
 
-## Version 0.1.6 - 4/12/2021
+### Version 0.1.6 - 4/12/2021
 - Cleared metadata in all examples ipynb (#327)
 - Moved docs requirements to source folder (#326)
 - Fixed manifest file