update archieml version

[brittharr]

Because the major version is 0 the ^ doesn't allow graceful minor version updates :(

[mhkeller]

Thanks @brittharr. I've been meaning to add a couple things to this library and this will be a good reason to push some things out

[mhkeller]

@brittharr what's the difference in the new version and would this be considered a breaking change?

[brittharr]

Non-breaking! newsdev/archieml-js#28 < supporting nested objects is the only diff