[MRG] Release 0.8.1 (#325)

* update delease file and add it to doc ith mystè_parser

* typos in release file

* update PR template

* test debug doc build

* test debug doc build

* wrog circleci

* set proper version number

* add numpy 1.20 constraint

* remove python 3.6 deprecated in december

* add python 3.10

* debug pip on windows

* proper yml

* remoe 3.10 becauqe of troch

* next try

* try distutils

* back

* try something

* new stuf

* debug yaml

* test back to old vriso f numpy

* try something

* windows is worksing?

6 files changed, 32 insertions, 12 deletions

diff --git a/.github/workflows/build_tests.yml b/.github/workflows/build_tests.yml
index ee5a435..3c99da8 100644
--- a/.github/workflows/build_tests.yml
+++ b/.github/workflows/build_tests.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [ "3.6", "3.7", "3.8", "3.9"]
+        python-version: ["3.7", "3.8", "3.9"]
 
     steps:
     - uses: actions/checkout@v1
@@ -128,12 +128,29 @@ jobs:
       uses: actions/setup-python@v1
       with:
         python-version: ${{ matrix.python-version }}
+    - name: RC.exe
+      run: |
+        function Invoke-VSDevEnvironment {
+        $vswhere = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe"
+            $installationPath = & $vswhere -prerelease -legacy -latest -property installationPath
+            $Command = Join-Path $installationPath "Common7\Tools\vsdevcmd.bat"
+          & "${env:COMSPEC}" /s /c "`"$Command`" -no_logo && set" | Foreach-Object {
+                if ($_ -match '^([^=]+)=(.*)') {
+                    [System.Environment]::SetEnvironmentVariable($matches[1], $matches[2])
+                }
+            }
+        }
+        Invoke-VSDevEnvironment
+        Get-Command rc.exe | Format-Table -AutoSize
+    - name: Update pip
+      run : |
+        python -m pip install --upgrade pip setuptools
+        python -m pip install cython
     - name: Install POT
       run: |
         python -m pip install -e .
     - name: Install dependencies
       run: |
-        python -m pip install --upgrade pip
         python -m pip install -r .github/requirements_test_windows.txt
         python -m pip install torch==1.8.1+cpu -f https://download.pytorch.org/whl/torch_stable.html
         python -m pip install pytest "pytest-cov<2.6"
diff --git a/RELEASES.md b/RELEASES.md
index 6d4f565..ff65fc1 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -1,16 +1,18 @@
 # Releases
 
 
-## 0.8.1dev
+## 0.8.1
 *December 2021*
 
-This release fixes several bugs and introduce two new backends: Cupy
-and Tensorflow. Note that teh tensorflow backend will work only when tensorflow
-has enabled the Numpy behavior (that's for transpose that is not by default in
-tensorflow). We also introduce a simple benchmark on CPU GPU for te sinkhorn
-solver that will be provided in teh documentation.
+This release fixes several bugs and introduces two new backends: Cupy
+and Tensorflow. Note that the tensorflow backend will work only when tensorflow
+has enabled the Numpy behavior (for transpose that is not by default in
+tensorflow). We also introduce a simple benchmark on CPU GPU for the sinkhorn
+solver that will be provided in the
+[backend](https://pythonot.github.io/gen_modules/ot.backend.html) documentation.
 
-As always we want to that the contributors who helped mak POT better (and bug free).
+
+As always we want to that the contributors who helped make POT better (and bug free).
 
 #### New features
 
diff --git a/ot/__init__.py b/ot/__init__.py
index 55972ea..e436571 100644
--- a/ot/__init__.py
+++ b/ot/__init__.py
@@ -50,7 +50,7 @@ from .gromov import (gromov_wasserstein, gromov_wasserstein2,
 # utils functions
 from .utils import dist, unif, tic, toc, toq
 
-__version__ = "0.8.1dev"
+__version__ = "0.8.1"
 
 __all__ = ['emd', 'emd2', 'emd_1d', 'sinkhorn', 'sinkhorn2', 'utils',
            'datasets', 'bregman', 'lp', 'tic', 'toc', 'toq', 'gromov',
diff --git a/requirements.txt b/requirements.txt
index d43be7a..8b75241 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-numpy
+numpy>=1.16
 scipy>=1.3
 cython
 matplotlib
diff --git a/setup.cfg b/setup.cfg
index 1177faf..9a4c434 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [metadata]
-description-file = README.md
+description_file = README.md
 
 [flake8]
 exclude = __init__.py
diff --git a/setup.py b/setup.py
index 86c7c8d..44cc6dd 100644
--- a/setup.py
+++ b/setup.py
@@ -95,5 +95,6 @@ setup(
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
     ]
 )