.travis.yml in rflow-1.3.1 vs .travis.yml in rflow-1.3.2

@@ -4,9 +4,11 @@
   - 1.9.3
   - 2.0.0
   - 2.1.0
   - 2.2.0
   - 2.3.0
+  - 2.4.2
+  - 2.5.3
 
 before_install:
   - sudo apt-get install libtool autoconf automake uuid-dev build-essential
   - wget http://download.zeromq.org/zeromq-3.2.4.tar.gz && tar zxvf zeromq-3.2.4.tar.gz && cd zeromq-3.2.4 && ./configure && make && sudo make install && cd ..
 # Only has 4.0.4, need 3.2 version due to old em-zeromq