Use python_requires to require higher python versions.

Also, use the matmul operator once more.

Author: arokem

.travis.yml

@@ -3,8 +3,6 @@ sudo: false
 
 python:
 - 3.6
-- 3.4
-- 2.7
 
 install:
 - travis_retry pip install -r requirements-dev.txt

nitime/algorithms/event_related.py

@@ -55,10 +55,7 @@ def fir(timeseries, design):
     and Unbiased Approach. Human Brain Mapping, 11:249-260
 
     """
-    h = np.array(np.dot(np.dot(linalg.pinv(np.dot(design.T, design)),
-                               design.T),
-                        timeseries.T))
-    return h
+    return linalg.pinv(design.T @design) @ design.T @ timeseries.T
 
 
 def freq_domain_xcorr(tseries, events, t_before, t_after, Fs=1):

nitime/version.py

@@ -96,3 +96,4 @@
 VERSION = __version__
 PACKAGE_DATA = {"nitime": ["LICENSE", "tests/*.txt", "tests/*.npy",
                            "data/*.nii.gz", "data/*.txt", "data/*.csv"]}
+PYTHON_REQUIRES = ">=3.5"

setup.py

@@ -45,6 +45,7 @@
             package_data=PACKAGE_DATA,
             install_requires=REQUIRES,
             requires=REQUIRES,
+            python_requires=PYTHON_REQUIRES,
             )
 
 try: