CI: test on julia 1.2, 1.3, and allow nightly failure (#79)

Author: rfourquet

.travis.yml

@@ -6,7 +6,13 @@ julia:
   - 0.7
   - 1.0
   - 1.1
+  - 1.2
+  - 1.3
+  - 1.4
   - nightly
+matrix:
+  allow_failures:
+  - julia: nightly
 notifications:
   email: false
 # uncomment the following lines to override the default test script

appveyor.yml

@@ -3,7 +3,13 @@ environment:
   - julia_version: 0.7
   - julia_version: 1.0
   - julia_version: 1.1
+  - julia_version: 1.2
+  - julia_version: 1.3
+  - julia_version: 1.4
   - julia_version: nightly
+matrix:
+  allow_failures:
+    - julia_version: nightly
 platform:
   - x86 # 32-bit
   - x64 # 64-bit