- Integrated changes to the stop mechanism
- Also re-worked the interface to have the same execOn* methods as Sensor Groups

- Decoupled the stop() and wait() methods
- A stop command is issued to all sensor groups, then a wait is performed
- Wait() now does busy waiting at a 10ms frequency and times out based
on the interval of the sensor group

- This plugin allows to write arbitrary sensor data to the local file system
- Removed the obsolete sink functionality in SensorBase
- Also fixed a minor bug concerning MQTT topic assignment in template analyzers

- use std::atomic_flag based spin lock for thread safety
- minor fixes and improvements

Pusher: Caliper plugin preparations: introduce sensor mutex to allow for runtime addition of sensors

- Update/improve doxygen documentation
- Unify function name scheme of entity with SensorGroups
- Squash some TODOs

- Adapt Configurators:
  *Introduce partial template specialization in ConfiguratorTemplate
  *Move common logic to ConfiguratorInterface
  *Update and improve doxygen documentation
  *Adapt all plugin configurators
- Refactor printConfig of SensorGroups
- Minor improvements overall

- make use of new EntityInterface
- _keepRunning is now a bool
- extend and improve (doxygen) documentation

- The MQTT topic of a sensor is now used to identify the file name of the
sink and is appended to the path given as input

Change perf-plugin implementation: Instead of duplicating sensorGroups per CPU only one group is used with duplicated sensors

- The GlobalConfiguration class includes all shared logic to read and
parse configuration attributes for the collectagent and dcdbpusher
- The class is further expanded to add application-specific
configuration parameters and blocks

- Auto-publish is now case insensitive with respect to the <sensor> and
<group> patterns
- If an invalid pattern was specified (missing <sensor> clause) the
configuration is aborted
- Checks for the uniqueness of sensor and group names have been
temporarily dropped as they interfere with templates and entities
(until we find a good solution for MQTT topics)

- Added some more indentation to make the configurations more readable
- Fixed one more warning in dcdbquery

- Boolean configuration options now all accept "true" and "on" keywords
- Cache interval and thread count parameters removed from the command-line
interface for consistency; these can still be set in the config files
like all other parameters
- global.conf file renamed to dcdbpusher.conf for consistency

- Checks on MQTT topics have been made generic in the MQTTChecker singleton
class under "common"
- MQTT topic checks are now performed also when plugins are reloaded; if
the checks fail, the plugin is cleared and left uninitialized
- All sensors in a plugin not satisfying the checks are logged now, not
only the first one
- Fixed a minor bug that resulted in msgrates of 0 under certain
compilers, due to type promotion in C++

- Removed dependencies from data analytics framework to dcdbpusher
- Checks for correctness of MQTT topics moved to the mqttChecker shared class

- Added a 'common' directory where all shared code has been placed
- Analytics package has been moved out of dcdbpusher, now has its own makefile
- Some renaming here and there for uniformity