test: Add RQ 1.3 to test matrix

Author: untitaker

tox.ini

@@ -42,7 +42,7 @@ envlist =
     {pypy,py2.7,py3.5,py3.6,py3.7,py3.8}-pyramid-{1.3,1.4,1.5,1.6,1.7,1.8,1.9,1.10}
 
     {pypy,py2.7,py3.5,py3.6}-rq-{0.6,0.7,0.8,0.9,0.10,0.11}
-    {pypy,py2.7,py3.5,py3.6,py3.7,py3.8}-rq-{0.12,0.13,1.0,1.1,1.2}
+    {pypy,py2.7,py3.5,py3.6,py3.7,py3.8}-rq-{0.12,0.13,1.0,1.1,1.2,1.3}
 
     py3.7-aiohttp-3.5
     py{3.7,3.8}-aiohttp-3.6
@@ -147,6 +147,7 @@ deps =
     rq-1.0: rq>=1.0,<1.1
     rq-1.1: rq>=1.1,<1.2
     rq-1.2: rq>=1.2,<1.3
+    rq-1.3: rq>=1.3,<1.4
 
     aiohttp-3.4: aiohttp>=3.4.0,<3.5.0
     aiohttp-3.5: aiohttp>=3.5.0,<3.6.0