* Allow executing a CurlLoop::FutureRequest::Callback in separate thread
  and improve error diagnostics

* Rename Acq Callback/Finished to Trigger

* Idem for MessagePtr = shared_ptr<Stream::Message>

* initialize triggers _synchronize (previous initializeController),
* Improve error diagnostics by printing request URL
* Create MultiParamRequest dealing with parallel/sequencial requests
* Export initialize, cam_status and plugin_status to Tango
* Replace Initialis[e|ing] by Initializ[e|ing]

* Implemented in detector-integration-20.1.6.45653-ge2626bbef-stable

* https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#f48-dont-return-stdmovelocal

* EXPOSURE, FRAME_TIME, NIMAGES, NTRIGGER, TRIGGER_MODE

Prepare 1.9

See merge request !5

Update the build sytem to support devel conda package

See merge request !4