Auto merge of #100 - matthiasbeyer:travis-test-subcrates, r=matthiasbeyer

travis: Run cargo chain for all cargo files

Test sub-crates if there are changes in them, as pointed out by @TheNeikos in #99, this wasn't happening before.

.travis.yml

@@ -44,6 +44,15 @@ script:
         }
 
         [[ $(changes_in "doc") ]] && echo "Changes in ./doc are not build by CI"
+
+        for d in $(find -name "Cargo.toml" | grep -vE "^.$"); do
+            dir=$(dirname $d)
+            changes_in $dir &&                \
+              echo -e "\nRunning in $d\n" &&  \
+              travis_cargo_run_in $dir
+        done
+
+        echo -e "\nRunning on top-level crate...\n"
         travis_cargo_run_in "."
 
 addons: