Issue #2938375 by mondrake: Deprecate in ImagemagickToolkit all methods and properties that are just dupes of ImagemagickExecArguments

Issue #2936861 by mondrake: Make ImagemagickExecArguments::find return the arguments, not the indexes

Issue #2936618 by mondrake: Allow specifying if prepended arguments settings are added before/after the source path

Issue #2936617 by mondrake: Introduce helper methods to add and escape arguments in ImageToolkitOperation plugins

Issue #2936615 by mondrake: Finalise new argument management methods names in ImagemagickExecArguments

Issue #2925780 by mondrake, Mirnaxvb: Some arguments like "density" should be called before the source of the image instead of after.

Issue #2884581 by mondrake, Rar9: Call to undefined method ImagemagickExecArguments::escapeShellArg() from alter hooks

Issue #2880261 by mondrake: Add possibility to pass arguments that are not to be added to the convert command line

Issue #2848827 by mondrake: getLocalSourcePath() returns empty string if identify data was read from cache (8.x-2.x only)

Issue #2834497 by mondrake: Introduce an optional 'filter' argument to resize/scale/scale_and_crop (and rotate) operations

Issue #2832168 by mondrake: Add to README.txt information about how the toolkit works and how to debug