Getting undefined: math.MaxInt error for 1.16

[dhirajsittu781]

I'm running "go get -u github.com/ggwhite/go-masker" and getting the following error:
../../../../go/pkg/mod/github.com/ggwhite/go-masker@v1.0.8/masker.go:322:64: undefined: math.MaxInt

Could you please upgrade the codebase for go 1.16 and above?

[ggwhite]

I fixed go version in go.mod.

Please check in v1.0.9

Reference: #18 (comment)