Support and CI against Julia 1.4, 1.5

Author: dillondaudert

.appveyor.yml

@@ -1,6 +1,7 @@
 environment:
   matrix:
-  - julia_version: 1.3
+  - julia_version: 1.4
+  - julia_version: 1.5
   - julia_version: nightly
 
 platform:

.travis.yml

@@ -9,7 +9,8 @@ before_script:
   - git config --global user.name Tester
   - git config --global user.email te@st.er
 julia:
-  - 1.3
+  - 1.4
+  - 1.5
   - nightly
 script: travis_wait julia --project -e 'using Pkg; Pkg.test(; coverage=true)'
 matrix:
@@ -25,7 +26,7 @@ after_success:
 jobs:
   include:
     - stage: "Documentation"
-      julia: 1.3
+      julia: 1.5
       os: linux
       script:
         - julia --project=docs/ docs/make.jl

Project.toml

@@ -16,7 +16,7 @@ DataStructures = "0.15, 0.17"
 Distances = "0.8, 0.9"
 LightGraphs = "1.3"
 Reexport = "0.2"
-julia = "1.3"
+julia = "1.4, 1.5"
 
 [extras]
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"