Update to 0.8.0

CHANGELOG.md

 # Changelog of webgeodyn
 
+0.8.0 - 2019-08-07
+------------------
+* COVOBS splines loading method now returns the SV
+    - This is done by implementing the expression of derivative splines that is tested against the numerical counterpart
+    - The test fails for scipy<1.1 so webgeodyn now requires scipy>1.1
+* New versions of webgeodyn should now normally be uploaded automatically on PyPI
+
 0.7.1 - 2019-06-07
 ------------------
 * Fixed COVOBS splines loading method: 

webgeodyn/_version.py

-__version__ = '0.7.1'
+__version__ = '0.8.0'