In good tradition every (second) release is followed by another one to fix the regressions. Sorry…
So this release contains mostly regression fixes for 1.4.36 and other bug fixes.
1.4.37 contains some regression fixes for 1.4.36, and cmake, scons and FreeBSD (and maybe other BSDs) related fixes. Static builds (for now scons only) have been improved. mmap handling in mod_cgi was improved, also the network mmap backend now handles SIGBUS (SIGBUS is triggered if a file gets smaller while reading; there are still some other places this can happen).
The internal API changed again, so please be careful with 3rd party plugins.
The test suite on our jenkins instance is now also run for scons (including static and fullstatic builds) and FreeBSD, hopefully preventing the kind of regressions especially FreeBSD had with 1.4.36 in future releases.