Remove CI for OTP R16 and 18.

R16 doesn't like queue:queue(A) and wants queue() instead - WONTFIX.
18 doesn't like dict(), used in proper, - need to upgrade proper and/or make
sure hope only requires it for testing, not when pulled-in as a dep.

diff --git a/.travis.yml b/.travis.yml
index e5c2cd9..068c3a3 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,10 +6,8 @@ language:
     erlang
 
 otp_release:
-    - 18.0
     - 17.5
     - 17.0
-    - R16B02
 
 script:
     "make travis_ci"