1.7.0

• [cygnus-ngsi][feature] Add global data capping/expirationn options based on time and size (#1317)
• [cygnus-ngsi][feature] Add specific data capping/expiration implementation for NGSICKANSink (#1344)
• [cygnus-ngsi][feature] Add specific data capping/expiration implementation for NGSIMySQLSink (#1365)
• [cygnus] Add Travis CI (#1347)
• [cygnus-ngsi][hardening] Force lowercase organization, dataset and resource names in NGSICKANSink (#1352)
• [cygnus-ngsi][hardening] Replace warnings upon unnecessary header received with debug traces at NGSIRestHandler (#1354)
• [cygnus-ngsi][hardening] Improve persistence error logs at NGSISink (#1358)
• [cygnus-ngsi][hardening] Add raw bytes to NGSIEvent (#1345)
• [cygnus-ngsi][hardening] Add cache to NGSIMySQLSink (#130)
• [cygnus][hardening] Fix "FIWARE" name in license headers (#1369)
• [cygnus-ngsi][bug] Differentiate among enterprise and individual Carto accounts (#1382)
• [cygnus-common][hardening] Clean and modularize ManagementInterface.java (#1368)
• [cygnus-common][feature] Add KPIs API (#1339)
• [cygnus-common][bug] Fix error handling upon MongoDB collection creation (#1377)
• [cygnus-ngsi][hardening] Add integration example with Apache Spark (#1397)
• [cygnus-ngsi][hardening] Add a piece of documentation about capping and/or expirating records in CKAN, MySQL, MongoDB and STH Comet (#1391)
• [cygnus-ngsi][hardening] Update Cygnus NGSI README with last features and new advanced topics (#1390)