setup proxy caching
Merge branch 'master' of https://github.com/jcruz2us/jena-sparql-api

# By cstadler
# Via cstadler
* 'master' of https://github.com/jcruz2us/jena-sparql-api:
  Added module for spring batch-based query execution
  [maven-release-plugin] prepare for next development iteration
  [maven-release-plugin] prepare release jena-sparql-api-parent-2.11.1-48
  Bumbed some plugin version in the hope the fix the deployment issue
  Fixed a bug with xml result sets
  Added module for concepts and SPARQL path finding
change indentation from spaces to tabs