do not hardpin requirements

MaxBenChrist · MaxBenChrist · commit 73a01f738269 · 2017-11-07T20:55:24.000+05:30
diff --git a/rdocs-requirements.txt b/rdocs-requirements.txt
@@ -1,3 +1,3 @@
 Sphinx>=1.6.4
-sphinx_rtd_theme
+sphinx_rtd_theme>=0.2.4
 -r requirements.txt
diff --git a/requirements.txt b/requirements.txt
@@ -8,6 +8,6 @@ scikit-learn>=0.17.1
 future>=0.16.0
 six>=1.10.0
 tqdm>=4.10.0
-dask==0.15.2
-distributed==1.18.3
 ipaddress>=1.0.18; python_version <= '2.7'
+dask>=0.15.2
+distributed>=1.18.3
diff --git a/test-requirements.txt b/test-requirements.txt
@@ -4,7 +4,7 @@ pytest-xdist>=1.15.0
 six>=1.10.0
 mock>=2.0.0
 matplotlib>=2.0.0
-seaborn==0.7.1
-ipython==5.3.0
-notebook==4.4.1
-pandas-datareader==0.5.0
+seaborn>=0.7.1
+ipython>=5.3.0
+notebook>=4.4.1
+pandas-datareader>=0.5.0
