Merge pull request #24 from szilardhuber/master

Fixed multiple subscription problem.
Merge pull request #25 from szilardhuber/master

Convert is now exported.
fix or log PB parse errors
Fixed convert issue. - Following change of ConfigData becoming repeated.
Merge pull request #26 from starschema/convert-fix

Fixed convert issue. - Following change of ConfigData becoming repeated.
accessor for log server stat
Fixed bug when converting template without configdata
Merge pull request #27 from starschema/convert-fix

Fixed bug when converting template without configdata
add remove feature to meta_data_server
add logging to reconnection logic
more logs to the connector lib
Added bytes type.