New Features in Coin v4.0.4

This is a bugfix release.

This is a brief summary of the new features in Coin v4.0.4:

• Added EGL support.
• Added support for building Coin as subdirectory.
• Added shaded hidden lines visual style.

Bug fixes:

• Fixed calling deleteAll on invalid pointers in SoCallbackAction.
• Updated cmake_minimum_required command to support CMake >= 3.30.
• Fixed crash in SoVRMLBackground::GLRender due to unchecked pointer.
• Fixed regression due to removed cc_glglue initialization.
• Transferred ANSI encoded files to UTF-8.
• Fixed invalid access when removing callback.
• Fixed macro handling to avoid conflicts with Microsoft Win32 API headers.
• Fixed typos and weird string outputs.
• Fixed format string vulnerabilities.
• Minor optimization to avoid repeated calculation of identity rotation.
• Minor optimization to avoid needless matrix multiplications.