chore: update module version to 1.18 and fix build constraint lines

This change implies that the module can only be used with Go1.17+ from
this commit and onward.

See proposal for reference:
https://go.googlesource.com/proposal/+/master/design/draft-gobuild.md

.github/workflows/ci.yml

@@ -16,8 +16,6 @@ jobs:
       fail-fast: false
       matrix:
         go:
-          - "1.15.x"
-          - "1.16.x"
           - "1.17.x"
           - "1.18.x"
         os:

CHANGELOG.md

@@ -4,8 +4,12 @@ All notable changes to this project are documented in this file.
 
 **THIS LIBRARY IS STILL IN ALPHA AND THERE ARE NO GUARANTEES REGARDING API STABILITY YET**
 
-## [v0.7.4] - 2022-03-18
+## [v0.7.4] - 2022-03-21
+
+:warning: Starting from this version, [Go 1.17+](https://golang.org/doc/install) is required to use this package.
+
 - Fix `reflect.mapiterinit` function prototype for go1.18, changed in https://github.com/golang/go/commit/1b2d794ca3ba60c2dbc958a271662784a7122739.
+- Update module version to `1.18` and fix build constraint lines.
 
 ## [v0.7.3] - 2021-11-02
 - Fix the encoding of zero-value time.Duration type in string format.
@@ -69,6 +73,7 @@ This includes the following changes, but not limited to:
 ## [v0.1.0] - 2019-08-30
 Initial realease.
 
+[v0.7.4]: https://github.com/wI2L/jettison/compare/v0.7.3...v0.7.4
 [v0.7.3]: https://github.com/wI2L/jettison/compare/v0.7.2...v0.7.3
 [v0.7.2]: https://github.com/wI2L/jettison/compare/v0.7.1...v0.7.2
 [v0.7.1]: https://github.com/wI2L/jettison/compare/v0.7.0...v0.7.1

README.md

@@ -16,12 +16,14 @@
 
 ## Installation
 
-Jettison uses the new [Go modules](https://github.com/golang/go/wiki/Modules). Releases are tagged according to the _SemVer_ format, prefixed with a `v`, starting from *0.2.0*. You can get the latest release using the following command.
+Jettison uses [Go modules](https://github.com/golang/go/wiki/Modules). Releases are tagged according to the _SemVer_ format, prefixed with a `v`, starting from *0.2.0*. You can get the latest release using the following command.
 
 ```console
-$ go get github.com/wI2L/jettison
+$ go get github.com/wI2L/jettison@latest
 ```
 
+:warning: From version `v0.7.4`, the packages requires [Go 1.17+](https://golang.org/doc/install) to build, due to the usage of the [new build constraints](https://go.googlesource.com/proposal/+/master/design/draft-gobuild.md).
+
 ## Key features
 
 - Fast, see [benchmarks](#benchmarks)

go.mod

@@ -1,6 +1,6 @@
 module github.com/wI2L/jettison
 
-go 1.17
+go 1.18
 
 require (
 	github.com/json-iterator/go v1.1.12

json_1.13_test.go

@@ -1,4 +1,4 @@
-// +build !go1.14
+//go:build !go1.14
 
 package jettison
 

json_1.14_test.go

@@ -1,4 +1,4 @@
-// +build go1.14
+//go:build go1.14
 
 package jettison
 

map_1.17.go

@@ -1,4 +1,4 @@
-// +build !go1.18
+//go:build !go1.18
 
 package jettison
 

map_1.18.go

@@ -1,4 +1,4 @@
-// +build go1.18
+//go:build go1.18
 
 package jettison