Dropping support for 32-bit linux ARM builds
A new dependency of libsignal-client has proven rather difficult to build for ARM Linux systems. Signal themselves had to fix it for 64 bit ARM, but they did not do so for 32 bit ARM. It seems like it might be possible to fix for 32 bit ARM systems, but I'm not planning on figuring that out at this time.
A warning message will be printed at build time and on startup for affected systems starting in the next release