reduce test matrix on CI

Author: aviks

.gitignore

@@ -1,4 +1,5 @@
 *~
 .juliahistory
 .DS_Store
-Manifest.toml
+Manifest.toml
+.jekyll-cache

.travis.yml

@@ -2,23 +2,26 @@ language: julia
 os:
   - linux
   - osx
-  - windows
 julia:
   - 1.0
-  - 1.1
-  - 1.2
   - 1.3
   - nightly
 jdk:
   - oraclejdk8
   - openjdk10
   - openjdk11
 
+end:
+  - JULIA_COPY_STACKS=1
+
 matrix:
   allow_failures:
     - julia_version: nightly
-    - os: windows
-    - os: osx
+
+branches:
+  only:
+    - master
+    - /release-.*/
 
 notifications:
   email: false

appveyor.yml

@@ -13,12 +13,17 @@ platform:
 matrix:
   allow_failures:
   - julia_version: nightly
+  - platform: x86
+environment:
+  JULIA_COPY_STACKS: 1
 
 branches:
   only:
     - master
     - /release-.*/
 
+skip_tags: true
+
 notifications:
   - provider: Email
     on_build_success: false