Prepare for release 23.5.0

[pascalkuthe]

• Migrate to LLVM 15 and opaque pointers
• fix panic for current probes to trivially open branches (fixes #52, fixes #53, fixes #66)
• warn when using trivially open branches
• add basic logging
• add crash handler
• update build instructions
• bump dependencies

[dwarning]

Thanks Pascal. Will be an update of the windows binaries are available?

[pascalkuthe]

the master build is automatially build by our CI and uploaded, you can find the links both for windows and linux in the README:

To test the latest development version you can download nightly version of OpenVAF for linux or windows.

These binaries always reflect the newest development state. The downloads on the website (openvaf.semimod.de) will only be updated once the new version is released but I want to test the current build for a couple more days to make sure that there are no new bugs before the next release.