Add Travis build

.travis.yml

@@ -0,0 +1,13 @@
+dist: bionic
+language: python
+python:
+  - "3.6"
+  - "3.7"
+  - "3.8"
+os: linux
+install:
+  - pip install -r requirements_dev.txt
+  - python setup.py develop
+script:
+  - black --line-length 80 --check --diff tensorflow_manopt
+  - pytest -v tensorflow_manopt

README.md

@@ -1,5 +1,7 @@
 # TensorFlow ManOpt
 
+[![Build Status](https://travis-ci.org/master/tensorflow-manopt.svg?branch=master)](https://travis-ci.org/master/tensorflow-manopt)
+[![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/python/black)
 [![License](https://img.shields.io/:license-mit-blue.svg)](https://badges.mit-license.org)
 
 A library for manifold-constrained optimization in TensorFlow.

examples/grnet/README.md

@@ -6,10 +6,10 @@ Implementation of GrNet [1], a deep network on Grassmann manifolds.
 
 ## Requirements
 
- * Python 3.5+
+ * Python 3.6+
  * SciPy
  * NumPy
- * TensorFlow 2.3+
+ * TensorFlow 2.0+
  * TensorFlow ManOpt
 
 ## Training

examples/lienet/README.md

@@ -7,10 +7,10 @@ skeleton-based action recognition.
 
 ## Requirements
 
- * Python 3.5+
+ * Python 3.6+
  * SciPy
  * NumPy
- * TensorFlow 2.3+
+ * TensorFlow 2.0+
  * TensorFlow ManOpt
 
 ## Training

examples/spdnet/README.md

@@ -6,10 +6,10 @@ Implementation of SPDNet [1], a Riemannian network for SPD matrix learning.
 
 ## Requirements
 
- * Python 3.5+
+ * Python 3.6+
  * SciPy
  * NumPy
- * TensorFlow 2.3+
+ * TensorFlow 2.0+
  * TensorFlow ManOpt
 
 ## Training

requirements.txt

@@ -1 +1 @@
-tensorflow>=2.3.0
+tensorflow>=2.0.0

requirements_dev.txt

@@ -0,0 +1,2 @@
+pip>=20.0.0
+black

setup.py

@@ -9,15 +9,14 @@
     author_email="[email protected]",
     packages=find_packages(),
     install_requires=Path("requirements.txt").read_text().splitlines(),
-    python_requires=">=3.5.0",
+    python_requires=">=3.6.0",
     url="https://github.com/master/tensorflow-manopt",
     zip_safe=True,
     classifiers=[
         "Development Status :: 4 - Beta",
         "Intended Audience :: Science/Research",
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",