Merge pull request #198 from gdamjan/master

add tuple_calls compiler flag for erlang 21
diff --git a/rebar.config b/rebar.config
index adc1d78..014ff05 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,5 +1,6 @@
 % -*- mode: erlang -*-
 {erl_opts, [debug_info,
+            tuple_calls,
             {platform_define, "^R15", 'gen_tcp_r15b_workaround'},
             {platform_define, "^(R14|R15|R16B-)", 'crypto_compatibility'},
             {platform_define, "^(R14|R15|R16B|17)", 'rand_mod_unavailable'},