Release 0.16.0 (#738)

* Update changelog

* Bump u8darts

Author: hrzn

CHANGELOG.md

@@ -4,7 +4,31 @@
 Darts is still in an early development phase and we cannot always guarantee backwards compatibility. Changes that may **break code which uses a previous release of Darts** are marked with a "🔴".
 
 ## [Unreleased](https://github.com/unit8co/darts/tree/master)
-[Full Changelog](https://github.com/unit8co/darts/compare/0.15.0...master)
+[Full Changelog](https://github.com/unit8co/darts/compare/0.16.0...master)
+
+## [0.16.0](https://github.com/unit8co/darts/tree/0.16.0) (2022-01-13)
+
+### For users of the library:
+
+**Improved**
+- The [documentation page](https://unit8co.github.io/darts/index.html) has been revamped and now contains
+  a brand new Quickstart guide, as well as a User Guide section, which will be populated over time.
+- The [API documentation](https://unit8co.github.io/darts/generated_api/darts.html) has been revamped and improved,
+  notably using `numpydoc`.
+- The datasets building procedure has been improved in `RegressionModel`, which yields dramatic speed improvements.
+
+**Added**
+- The `KalmanFilter` can now do system identification using `fit()` (using [nfoursid](https://github.com/spmvg/nfoursid)).
+
+**Fixed**
+- Catch a [potentially problematic case](https://github.com/unit8co/darts/issues/724) in ensemble models.
+- Fixed support for `ReduceLROnPlateau` scheduler.
+
+
+### For developers of the library:
+- We have switched to [black](https://black.readthedocs.io/en/stable/) for code formatting (this is checked
+  by the CI pipeline).
+
 
 ## [0.15.0](https://github.com/unit8co/darts/tree/0.15.0) (2021-12-24)
 ### For users of the library:

setup_u8darts.py

@@ -29,7 +29,7 @@ def read_requirements(path):
 
 setup(
     name="u8darts",
-    version="0.15.0",
+    version="0.16.0",
     description="A python library for easy manipulation and forecasting of time series.",
     long_description=LONG_DESCRIPTION,
     long_description_content_type="text/markdown",