The change does not affect plugin windows, which are created by the
host.

This change also avoids the AudioPluginHost leaving zombie child
processes behind.

The new class hold a list of ChildProcesses and periodically checks
their return value until they report termination. On Linux this check
is necessary to avoid leaving zombie processes behind.

This also adds missing KHRONOS_APIENTRY qualifications to the debug
callback type, which fixes potential crashes when running debug Win32
builds.

This fixes an edge case in which if listeners are both removed and added during a callback the added listener(s) may be called during the same iteration

- Prevent out of scope access of the listeners lock
- Allow clearing the listener list from a callback

viewDidDisappear may be called when a file is successfully selected.
presentationControllerDidDismiss is only called when the controller is
dismissed manually by the user, e.g. by tapping outside the sheet, or by
dragging it away.

Checking for sheet dismissal is necessary in iOS 15, but not in iOS 17.
In iOS 17, tapping outside the file chooser causes a callback to
documentPickerWasCancelled instead.

This also reverts commit c456f67c3f.

A Timer will only be created for the analysis task when necessary. This
ensures that the ScopedJuceInitialiser_GUI member inside the
DocumentController is initialised before a Timer instance is even
created.

This makes the AU Client compatible with other classes also using the
ScopedJuceInitialiser_GUI, specifically the ARADocumentController.

Even if this focus change is being propagated up by a child Component.

- Subsequently drops support for Xcode 15.0 while allowing users who have already resolved Xcode 15.0 issues to continue building

While Google Drive seemingly isn't trying to access URI's that aren't an
exact match, without the presence of FLAG_GRANT_PREFIX_URI_PERMISSION,
sharing files with Google Drive will silently fail.

This also fixes an issue where MIDI CI header data could contain spaces,
which is not allowed according to the spec.

This fixes a bug where moving a window between displays with different
scaling settings makes the embedded WebView misaligned.

Prior to this change all <tspan> elements without x, and y attributes would
just inherit the parent elements such attributes and be placed in the same
location. This didn't respect whether these attributes were consumed already
by the parent.

Having multiple x and y elements, or having a different number of x and y
elements was also not handled in line with the rules for SVG.

This change affects the DatagramSocket and StreamingSocket classes.

- Also refactored internals to use weak/shared pointers