eCAL 5.5.0

Changelog

eCAL v5.5.0:

* eCAL message recorder released
  * records messages in realtime in HDF5 format
  * synchronized recording over multiple targets
  * pre-buffer feature
  * modern QT based control gui
* eCAL message player
  * eCAL message replay
  * topic filtering
  * adjustable replay speed / looped play
  * modern QT based gui
  * command line version (with interactive mode)
* eCAL HDF5 recording read / write C++ SDK
  * high level API to iterate over recorded data sets
    * auto merging of splitted record files
    * distributed recording on multiple machines, handling as one recording
* Performance improvements
  * reduced memory copying on subscriber side
  * new latency send / receive samples demonstrating new performance
    using callback receive method
    * see Performance section in Readme.md file
    * performance factor 2 for windows factor 4 Linux for large messages
* CPack installer generates start menu entries on windows platform
* Different bug fixes

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