Added new version of Frites

I'm working on a Jupyter notebook that requires to import a function (conn_fit) which is only available in the latest version of Frites (0.4.4). So I added this version in the py-frites/package.py.

packages/py-frites/package.py

@@ -18,6 +18,7 @@ class PyFrites(PythonPackage):
     # notify when the package is updated.
     # maintainers = ['github_user1', 'github_user2']
 
+    version('0.4.4', sha256='280ca9f3f711da0550eceec8ce94108b891369b63ea3cc1b8c960825ed20fb3f')
     version('0.4.3', sha256='41a0aa2414196f1a08b7668b3e6be5872eda0f6814171408ef33af4904619f3a')
     version('0.4.2', sha256='5da63f6f91515ff0dbed0252a75fcbdeade4311bfd28d08cd644c89c85e6ac5a')