Increase likelihood of finding regressions through Travis CI

Expand range of tested OTP versions

Author: g-andrade

.travis.yml

@@ -1,9 +1,20 @@
 language: erlang
 otp_release:
-  - 22.1
-  - 22.0
+  # Not available on Travis CI: 19.1, 19.2 and 20.2
+  - 19.0
+  - 19.3
+  - 20.0
+  - 20.1
+  - 20.3
+  - 21.0
+  - 21.1.7
+  - 21.2
   - 21.3
-  - 20.1.7
+  - 22.0
+  - 22.1
+  - 22.2
+  - 22.3
+  - 23.0
 
 env:
   - TEST=1