Bump algebra and atto to versions with scala.js 1.0 releases

[cb372]

Currently in master sbt athemaJS/update will fail because the specified versions of its algebra and atto dependencies have not been published for Scala.js 1.x.

This was not caught until now because of the problem pointed out in #180: currently sbt's default project is set to publish, not the root project. The publish project does not aggregate the athemaJVM and athemaJS projects, so they are not checked by the CI build.

Questions for someone more familiar with the project (@pepegar? @andyscott?):

• should the publish project aggregate the athema projects? or are they deliberately excluded?
• what even is the publish project? I assume it's an aggregate of all the projects we want to publish, but how is it used? could we simplify the build by getting rid of it and setting publish := false on any projects we don't want to publish?

[andyscott]

should the publish project aggregate the athema projects? or are they deliberately excluded?

The athema project is just a toy/example, so I don't see any reason to publish it.

what even is the publish project? I assume it's an aggregate of all the projects we want to publish, but how is it used? could we simplify the build by getting rid of it and setting publish := false on any projects we don't want to publish?

I don't remember, to be honest! I think I created it as a way to deal with the crazy matrix of incompatibilities across Scala versions and library versions. It may very well be the case that we no longer need the publish project.