Tweak public CI configuration

appveyor.yml

@@ -3,5 +3,5 @@ build_script:
 - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -Sy"
 - C:\msys64\usr\bin\bash -lc "pacman --noconfirm -S gcc git make"
 test_script:
-- C:\msys64\usr\bin\bash -lc "cd $APPVEYOR_BUILD_FOLDER && make -k check"
-- C:\msys64\usr\bin\bash -lc "cd $APPVEYOR_BUILD_FOLDER && make -k check LEGACY=1"
+- C:\msys64\usr\bin\bash -lc "cd $APPVEYOR_BUILD_FOLDER && make -j 8 -k check"
+- C:\msys64\usr\bin\bash -lc "cd $APPVEYOR_BUILD_FOLDER && make -j 8 -k check LEGACY=1"

circle.yml

@@ -2,6 +2,10 @@ general:
   artifacts:
     - "test/pkgs.log"
 
+  branches:
+    ignore:
+      - gh-pages
+
 dependencies:
   cache_directories:
     - "~/.kerl"