Update all Dependencies to Latest; Ensure SemVer of `^X.Y`

[jimdelois]

Several outdated dependencies as per https://www.versioneye.com/user/projects/56038f55f5f2eb001a000cca?child=summary . Update them all and ensure that composer.json is using ^X.Y for the latest versions, and not ^X.Y.Z.

Useful may be composer outdated to grab the latest of everything.