fix travis file

.travis.yml

@@ -4,6 +4,6 @@ script:
 - export CROMWELL_VERSION=34
 #  - wget https://github.com/broadinstitute/cromwell/releases/download/$CROMWELL_VERSION/womtool-$CROMWELL_VERSION.jar
 - wget https://barmsijs.lumc.nl/womtool-35-a7ae2d8-SNAP.jar
-- for F in *.wdl; do echo $F; java -jar womtool-*.jar validate $F; done
+- for F in `find -name "*.wdl"`; do echo $F; java -jar womtool-*.jar validate $F; done
 - 'if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then git submodule foreach --recursive git checkout $TRAVIS_BRANCH && git submodule foreach --recursive git pull; fi'
 - "git diff --exit-code || (echo ERROR: Git changes detected. Please update submodules && exit 1)"

biopet/seqstat.wdl

@@ -2,6 +2,8 @@ version 1.0
 
 # Copyright Sequencing Analysis Support Core - Leiden University Medical Center 2018
 
+import "../common.wdl" as common
+
 task Generate {
     input {
         String? preCommand