* Refactor interface to PdmObjectHandle and PdmFieldHandle
Return objects instead of passing in structures as parameters
* Add nodiscard to several functions
* Remove redundant this->
* Rename to ptrReferencedObjectsByType
* Add shortcut for Plot Editor, and modify how command features are triggered
Use Ctrl-E to launch the Plot Editor.
* Add optional use of NOECHO and ECHO keywords in GRDECL files
* Add ECHO keywords to sector model export
* Add Help button to Preferences
Always create plots using Qwt
Always create plot for command "New Summary Plot"
#9103 : Fix missing updates in multiselect field update operation
Add Open Summary Plot Editor
Trigger missing load of data
Enable data source display for first realization of an ensemble
Always show legend text
Set version to 2022.06.0-RC-02
* Deprecate single summary plots and plot collections. Replace functionality using summary multi plots. Clean up some code. Fix crash when trying to normalize an empty curve