Could you please add a new tag for the latest commit?

[jeffprestes]

Hi,

First of all, thanks for the hard work and for sharing this lib with the community.

I am trying to use your library in my app using go mod with the latest fixes but as you forgot to create a new tag I am getting a old version that contains a bug already fixed at sign.go - constructSignedInfo.

So, could you please just create a new tag with this small revision?

Thanks in advance.

PS.: I know we could run go get github.com/russellhaering/goxmldsig@master but this small adjust will avoid this inconvenience