add a Project.toml, remove REQUIRE, update travis conf

- replace REQUIRE with a Project.toml, porting version bounds as is
- use a more recent Travis setup
- drop support for 0.7, but test on 1.1 and 1.2 too

Author: tpapp

.codecov.yml

@@ -0,0 +1 @@
+comment: false

.travis.yml

@@ -1,19 +1,35 @@
+## Documentation: http://docs.travis-ci.com/user/languages/julia/
 language: julia
+dist: xenial
 os:
   - linux
   - osx
 julia:
-  - 0.7
   - 1.0
+  - 1.1
+  - 1.2
   - nightly
-matrix:
-  allow_failures:
-    - julia: nightly
 notifications:
   email: false
-# 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("KernelDensity"); Pkg.test("KernelDensity"; coverage=true)'
+git:
+  depth: 99999999
+
+## uncomment the following lines to allow failures on nightly julia
+## (tests will run but not make your overall status red)
+#matrix:
+#  allow_failures:
+#  - julia: nightly
+
+## uncomment following lines to deploy documentation
+# jobs:
+#   include:
+#     - stage: Documentation
+#       julia: 1.0
+#       os: linux
+#       script:
+#         - julia --project=docs -e 'using Pkg; Pkg.instantiate(); Pkg.develop(PackageSpec(path=pwd()))'
+#         - julia --project=docs --color=yes docs/make.jl
+#       after_success: skip
 after_success:
-  - julia -e 'import Pkg, KernelDensity; cd(joinpath(dirname(pathof(KernelDensity)), "..")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
+  - julia --project=test/coverage -e 'using Pkg; Pkg.instantiate()'
+  - julia --project=test/coverage test/coverage/coverage.jl