Bump version to 1.17.0

Minor bump so the major.minor solr_result_cache key rotates (1.16 -> 1.17),
flushing the single-image cells cached under 1.16.0 for AlignedDatasets,
AllDatasets, AnatomyExpressedIn and TransgeneExpressionHere.

Author: Robbie1977

setup.py

@@ -3,7 +3,7 @@
 
 here = path.abspath(path.dirname(__file__))
 
-__version__ = "1.16.0"
+__version__ = "1.17.0"
 
 # Get the long description from the README file
 with open(path.join(here, 'README.md')) as f: