Merge branch 'nn_refactor' of https://github.com/naspert/pygsp into naspert-nn_refactor

Author: mdeff

.travis.yml

@@ -16,6 +16,11 @@ matrix:
       dist: trusty  # "cannot import name QtOpenGL" with xenial
       cache: pip  # avoid PySide wheel build
 
+addons:
+  apt:
+    packages:
+      - libflann-dev
+
 install:
   - pip install -U --upgrade-strategy eager .[alldeps,test,doc]
   # Update dependencies (e.g. numpy formatting changed in v1.14).

README.rst

@@ -37,7 +37,7 @@ The documentation is available on
 `Read the Docs <https://pygsp.readthedocs.io>`_
 and development takes place on
 `GitHub <https://github.com/epfl-lts2/pygsp>`_.
-A (mostly unmaintained) `Matlab version <https://lts2.epfl.ch/gsp>`_ exists.
+(A (mostly unmaintained) `Matlab version <https://epfl-lts2.github.io/gspbox-html>`_ exists.)
 
 The PyGSP facilitates a wide variety of operations on graphs, like computing
 their Fourier basis, filtering or interpolating signals, plotting graphs,