Binaries in release should be more portable

[rabbiveesh]

I just tried downloading the latest version of yomichan-import, and I got the following error:

./yomichan: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by ./yomichan)

With a little snooping, i found google/cadvisor#3155 where they dealt with this same issue by disabling cgo (I'm not so familiar with go, so I don't know if i've totally missed the boat here).

I think it would make sense to distribute a static binary rather than a dynamically linked one.