Merge branch 'release/iotplatform-v1' into hardening/sonar_memory_fixes
Merge pull request #504 from telefonicaid/hardening/sonar_memory_fixes

Sonar detected memory fixes (into release/iotplatfor-v1)
Merge pull request #498 from telefonicaid/bug/478_transactions

each send is considered a transaction
FIX documentation
Merge branch 'develop' into hardening/doc_improvement
Merge pull request #510 from telefonicaid/hardening/doc_improvement

 Improve README.md (into develop)