runtime: upgrade from go 1.11 to go 1.18 (#330)

Author: markus-wa

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ jobs:
   ci:
     strategy:
       matrix:
-        go-version: [1.11.x, 1.17.x]
+        go-version: [1.18.x]
 
     runs-on: ubuntu-latest
 

.github/workflows/protobuf.yml

@@ -26,7 +26,7 @@ jobs:
         if: env.PROTOBUFS_CHANGED == 'true'
         uses: actions/setup-go@v2
         with:
-          go-version: 1.14.x
+          go-version: 1.18.x
 
       - name: Install Protobuf tools
         if: env.PROTOBUFS_CHANGED == 'true'

README.md

@@ -49,7 +49,7 @@ If you have been enjoying this library and are considering donating, please chec
 
 ## Requirements
 
-This library requires at least `go 1.11` to run.
+This library requires at least `go 1.18` to run.
 You can download the latest version of Go [here](https://golang.org/).
 
 ## Quickstart Guide

go.mod

@@ -14,8 +14,17 @@ require (
 	github.com/stretchr/testify v1.7.0
 )
 
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/stretchr/objx v0.1.0 // indirect
+	golang.org/x/image v0.0.0-20180708004352-c73c2afc3b81 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
+)
+
 replace github.com/dustin/go-heatmap => github.com/markus-wa/go-heatmap v1.0.0
 
 replace github.com/stretchr/testify => github.com/stretchr/testify v1.6.1
 
-go 1.11
+go 1.18