upgrad: go v1.18.

go.mod

@@ -1,11 +1,13 @@
 module github.com/go-echarts/go-echarts/v2
 
-go 1.15
+go 1.18
+
+require github.com/stretchr/testify v1.6.0
 
 require (
-	github.com/cinar/indicator v1.2.24 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/kr/pretty v0.1.0 // indirect
-	github.com/stretchr/testify v1.6.0
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
 )

go.sum

@@ -1,10 +1,6 @@
-github.com/cinar/indicator v1.2.24 h1:/vDjrYyLQIIevmmjwr/RL55IGM2AXJgPv08DtQPHUn0=
-github.com/cinar/indicator v1.2.24/go.mod h1:5eX8f1PG9g3RKSoHsoQxKd8bIN97Cf/gbgxXjihROpI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/go-echarts/go-echarts v1.0.0 h1:n181E4iXwj4zrU9VYmdM2m8dyhERt2w9k9YhHqdp6A8=
-github.com/go-echarts/go-echarts v1.0.0/go.mod h1:qbmyAb/Rl1f2w7wKba1D4LoNq4U164yO4/wedFbcWyo=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=