Moar travis changes

- remove 3.2
- merge cs-fix with 3.4 build
- sf 3.4 & 4.0 are not allowed to fail
- php 7.2 with sf 4.0
- php 7.3 kept in allowed failures

.travis.yml

@@ -23,23 +23,18 @@ matrix:
       # common versions:
       - php: 7.1
         env: SYMFONY_VERSION="2.8.*"
-      - php: 7.1
-        env: SYMFONY_VERSION="3.2.*"
       - php: 7.1
         env: SYMFONY_VERSION="3.3.*"
       # most recent versions
       - php: 7.1
-        env: CHECK_PHP_SYNTAX="yes"
-      # bleeding edge (unreleased dev versions where failures are allowed)
-      - php: 7.1
-        env: SYMFONY_VERSION="3.4.*"
-      - php: 7.1
+        env: SYMFONY_VERSION="3.4.*" CHECK_PHP_SYNTAX="yes"
+      - php: 7.2
         env: SYMFONY_VERSION="4.0.*"
+      # bleeding edge (unreleased dev versions where failures are allowed)
       - php: nightly
         env: SYMFONY_VERSION="4.0.*"
     allow_failures:
       - php: nightly
-      - env: SYMFONY_VERSION="3.4.*"
 
 cache:
   directories: