add hex support

Stopper · Stopper · commit 4c244384c7ab · 2020-09-07T19:14:45.000+08:00
diff --git a/rebar.config b/rebar.config
@@ -7,3 +7,4 @@
 {post_hooks,
   [{"(linux|darwin|solaris)", clean, "make -C c_src clean"},
    {"(freebsd)", clean, "gmake -C c_src clean"}]}.
+{plugins, [rebar3_hex]}.
