fix version checks in test code

.travis.yml

@@ -11,7 +11,7 @@ notifications:
 # uncomment the following lines to override the default test script
 script:
   - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
-  - julia -e 'Pkg.clone(pwd()); Pkg.build("Augmentor"); Pkg.test("Augmentor"; coverage=VERSION >= v"0.6.0-alpha")'
+  - julia -e 'Pkg.clone(pwd()); Pkg.build("Augmentor"); Pkg.test("Augmentor"; coverage=VERSION >= v"0.6.0-pre.alpha")'
 after_success:
   # push coverage results to Coveralls
-  - julia -e 'if VERSION >= v"0.6.0-alpha" cd(Pkg.dir("Augmentor")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder()); end'
+  - julia -e 'if VERSION >= v"0.6.0-pre.alpha" cd(Pkg.dir("Augmentor")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder()); end'

test/runtests.jl

@@ -7,8 +7,10 @@ using Augmentor
 ambs = detect_ambiguities(Augmentor, ImageTransformations, Base, Core)
 if VERSION < v"0.6.0-" # good enough. the 10 on 0.5 are spurious
     @test length(setdiff(ambs, refambs)) <= 10
-else
+elseif VERSION > v"0.6.0-rc1"
     @test length(setdiff(ambs, refambs)) == 0
+else
+    info("test for ambiguities skipped because of untested julia version")
 end
 
 function str_show(obj)