chore: support go1.13 (#13)

Signed-off-by: Bo-Yi Wu <[email protected]>

.travis.yml

@@ -5,6 +5,7 @@ go:
   - 1.10.x
   - 1.11.x
   - 1.12.x
+  - 1.13.x
   - master
 
 matrix:

README.md

@@ -1,4 +1,4 @@
-# Authz 
+# Authz
 
 [![Build Status](https://travis-ci.org/gin-contrib/authz.svg)](https://travis-ci.org/gin-contrib/authz)
 [![codecov](https://codecov.io/gh/gin-contrib/authz/branch/master/graph/badge.svg)](https://codecov.io/gh/gin-contrib/authz)
@@ -10,7 +10,7 @@ Authz is an authorization middleware for [Gin](https://github.com/gin-gonic/gin)
 
 ## Installation
 
-```
+```bash
 go get github.com/gin-contrib/authz
 ```
 
@@ -46,7 +46,6 @@ The authorization determines a request based on ``{subject, object, action}``, w
 2. ``object``: the URL path for the web resource like "dataset1/item1"
 3. ``action``: HTTP method like GET, POST, PUT, DELETE, or the high-level actions you defined like "read-file", "write-blog"
 
-
 For how to write authorization policy and other details, please refer to [the Casbin's documentation](https://github.com/casbin/casbin).
 
 ## Getting Help

go.mod

@@ -1,8 +1,9 @@
 module github.com/gin-contrib/authz
 
+go 1.13
+
 require (
 	github.com/casbin/casbin/v2 v2.0.1
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/gin-gonic/gin v1.4.0
-	github.com/pkg/errors v0.8.0 // indirect
 )

go.sum

@@ -1,11 +1,5 @@
-github.com/Knetic/govaluate v3.0.0+incompatible h1:7o6+MAPhYTCF0+fdvoz1xDedhRb4f6s9Tn1Tt7/WTEg=
-github.com/Knetic/govaluate v3.0.0+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible h1:1G1pk05UrOh0NlF1oeaaix1x8XzrfjIDK47TY0Zehcw=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
-github.com/casbin/casbin v1.7.0 h1:PuzlE8w0JBg/DhIqnkF1Dewf3z+qmUZMVN07PonvVUQ=
-github.com/casbin/casbin v1.7.0/go.mod h1:c67qKN6Oum3UF5Q1+BByfFxkwKvhwW57ITjqwtzR1KE=
-github.com/casbin/casbin v1.9.1 h1:ucjbS5zTrmSLtH4XogqOG920Poe6QatdXtz1FEbApeM=
-github.com/casbin/casbin v1.9.1/go.mod h1:z8uPsfBJGUsnkagrt3G8QvjgTKFMBJ32UP8HpZllfog=
 github.com/casbin/casbin/v2 v2.0.1 h1:yCfJYcr27iIGqag9IYASlW6VBKiWjJiLgQ4yLyIogSw=
 github.com/casbin/casbin/v2 v2.0.1/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -25,8 +19,6 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
-github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
-github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=