Make implicit dependency on unicode_util_compat explicit

Explicit is better than implicit and actually of consequence in this
situation, since the depth of dependency declarations matters for rebar3
to decide which particular one it will choose to import - when there's
more than one.

Author: g-andrade

rebar.config

@@ -26,7 +26,8 @@
         {certifi, "2.5.2"},
         {metrics, "1.0.1"},
         {parse_trans, "3.3.0"},
-        {ssl_verify_fun, "1.1.6"}
+        {ssl_verify_fun, "1.1.6"},
+        {unicode_util_compat, "0.5.0"}
        ]}.
 
 {profiles, [{docs, [{deps,

rebar.lock

@@ -5,7 +5,7 @@
  {<<"mimerl">>,{pkg,<<"mimerl">>,<<"1.2.0">>},0},
  {<<"parse_trans">>,{pkg,<<"parse_trans">>,<<"3.3.0">>},0},
  {<<"ssl_verify_fun">>,{pkg,<<"ssl_verify_fun">>,<<"1.1.6">>},0},
- {<<"unicode_util_compat">>,{pkg,<<"unicode_util_compat">>,<<"0.5.0">>},1}]}.
+ {<<"unicode_util_compat">>,{pkg,<<"unicode_util_compat">>,<<"0.5.0">>},0}]}.
 [
 {pkg_hash,[
  {<<"certifi">>, <<"B7CFEAE9D2ED395695DD8201C57A2D019C0C43ECAF8B8BCB9320B40D6662F340">>},

src/hackney.app.src

@@ -17,7 +17,8 @@
       certifi,
       parse_trans,
       ssl_verify_fun,
-      metrics]},
+      metrics,
+      unicode_util_compat]},
     {included_applications, []},
     {mod, { hackney_app, []}},
     {env, [{timeout, 150000},