MAINT ignore externals folder for coverage

TST improve coverage
FIX installation in Makefile
FIX for python3

Author: jasmainak

.coveragerc

@@ -5,5 +5,4 @@ include = */pyglmnet/*
 omit =
     */setup.py
     */pyglmnet/benchmarks.py
-    */pyglmnet/datasets.py
     */pyglmnet/externals/*.py

Makefile

@@ -52,7 +52,7 @@ doc-publish:
 .PHONY: install
 install: dependencies
 	@echo "#### Installing pyglmnet ####"
-	python setup.py develop install
+	python setup.py install
 	@echo "#### Pyglmnet installed successfully ####"
 	@echo "#### Access http://glm-tools.github.io/pyglmnet/index.html for more information and tutorials ####"
 

tests/test_pyglmnet.py

@@ -394,6 +394,7 @@ def test_cdfast(distr):
 def test_fetch_datasets():
     """Test fetching datasets."""
     datasets.fetch_community_crime_data()
+    datasets.fetch_group_lasso_datasets()
 
 
 def test_random_state_consistency():