Make Erlang 24 the minimum version
We can drop a compat nouveau_maps module. Later we can check the code and see
if we can replace any maps:map/2 with maps:foreach/2 perhaps.
In smoosh_persist, no need to check for file:delete/2. Later we should probably
make the delete in couch_file do the same thing to avoid going through the file
server.
`sha_256_512_supported/0` has been true for a while but the check had been
broken, the latest crypto module is `crypto:mac/3,4` so we can re-enable these
tests.
ML discussion: https://lists.apache.org/thread/7nxm16os8dl331034v126kb73jmb7j3x
10 files changed
