Version 2.4.0, release candidate
This release candidate adds no new notable feature or fixes compared to v2.4.0-rc-0-gbc3b265.
- Misc: fixes to compiler warnings introduced by v2.4.0 (László Várady).
- Misc: build system fixes and release automation (László Várady).
- Misc: fix typo in readme (Japroz Saini)