Merge pull request msgpack#80 from okeuday/master

Update supported Erlang/OTP releases

Author: kuenishi

.travis.yml

@@ -5,6 +5,9 @@ script: PATH=.:$PATH make check-all
 notifications:
   email: false
 otp_release:
+  - 20.3
+  - 20.2
+  - 20.1
   - 20.0
   - 19.3
   - 19.2

rebar.config

@@ -1,7 +1,7 @@
 %-*-Mode:erlang;coding:utf-8;tab-width:4;c-basic-offset:4;indent-tabs-mode:()-*-
 % ex: set ft=erlang fenc=utf-8 sts=4 ts=4 sw=4 et nomod:
 
-{require_otp_vsn, "17|18|19|20"}.
+{require_otp_vsn, "17|18|19|20|21"}.
 
 {erl_opts, [fail_on_warning, debug_info, warn_untyped_record]}.
 %%, {parse_transform, eqc_cover}]}.