v3.1.11

• dht: fixed issue that could cause a listen operation after a previous cancelListen on the same key to not provide values in some cases
• proxy client: fixed issue that could cause a listen socket to remain open after cancellation
• proxy server: add value IDs to be used by iOS extension ( @atraczyk )
• build/meson: add support to build unit tests
• build/meson: add support to configure and install pkgconfig files for OpenDHT libraries
• build/meson: fix various build issues
• build/autotools: avoid using bash extension in configure.ac ( @jg1uaa )