Add testing target 2018.03 to Travis

Author: Tyil

.travis.yml

@@ -4,6 +4,7 @@ env:
   global:
     - PATH=/opt/rakudo-pkg/bin:$PATH
   matrix:
+    - TAG=v2018.03-01 VERSION=2018.03-01
     - TAG=v2018.02.1  VERSION=2018.02.1-01
     - TAG=v2017.12    VERSION=2017.12-01
     - TAG=v2017.11    VERSION=2017.11-01
@@ -20,3 +21,5 @@ install:
   - zef install --deps-only .
 
 script: AUTHOR_TESTING=1 prove -v -e "perl6 -Ilib" t/
+
+# vim: et ts=2 sw=2