Bump to 3.3.6

- [OSX tests added to CI](#1471),
joining linux and windows 10
- [upgrade relx to 3.22.3](#1518),
[fixing multiple
issues](https://github.com/erlware/relx/releases/tag/v3.22.3)
- [Fixing eunit errors in 19.3 when `init_per_*` isn't paired with
`end_per_*`](#1516)
- [Allow single test spec in
ct_opts](#1506)
- [Properly warn when missing inets at
runtime](#1505)
- [rebar_utils:escape_chars handles quotes in
paths](#1504)
- [Fix typo in help text for upgrade
command](#1503)
- [change package version warnings to debug
level](#1502)
- [Path-type sensitive .cmd creation for
escripts](#1500)
- [Windows escripts get cmd
autogenerated](#1494)
- [REBAR_CONFIG impacts config file for project root
only](#1497)
- [Fix wildcard usage in rebar3
clean](#1498)
- [Bump cth_readable to
1.2.4](#1496) (fixing some
erroneous reports when suites get skipped)
- [Add respect for src_dirs option in app_discover and
app_info](#1486)
- [Add support for global plugin-defined
templates](#1473)
- [catch badarg exception from eunit in
`rebar_prv_eunit`](#1472)

bootstrap

@@ -24,7 +24,7 @@ main(_) ->
     bootstrap_rebar3(),
 
     %% Build rebar.app from rebar.app.src
-    {ok, App} = rebar_app_info:new(rebar, "3.3.5", filename:absname("_build/default/lib/rebar/")),
+    {ok, App} = rebar_app_info:new(rebar, "3.3.6", filename:absname("_build/default/lib/rebar/")),
     rebar_otp_app:compile(rebar_state:new(), App),
 
     %% Because we are compiling files that are loaded already we want to silence

src/rebar.app.src

@@ -3,7 +3,7 @@
 
 {application, rebar,
  [{description, "Rebar: Erlang Build Tool"},
-  {vsn, "git"},
+  {vsn, "3.3.6"},
   {modules, []},
   {registered, []},
   {applications, [kernel,