v0.3.7

(from CHANGELOG.md)

Fixed

• Compiler warnings (#21, #29) (thanks, @hartwork!)
• gcc can now be set from env like the rest of the tools. (#30)) (thanks, @henry-nicolas and Helmut Grohne!)
• Fix the build for users without libsignal-protocol-c installed system-wide (#31) (thanks, @hartwork!)
• The example code is runnable again, and some memory leaks (#14) (thanks, @fbrausse!)
• Compiler warnings for test files.

Infrastructure

• Cover Linux build by GitHub Actions CI (#31) (thanks, @hartwork!)