Release procedure: avoid manually bumping version in bower.json
Release procedure: avoid manually bumping version in bower.json

by using `bower version` command (see documentation at https://bower.io/docs/api/#version)

pbanaszkiewicz/amy,swcarpentry/amy,swcarpentry/amy,pbanaszkiewicz/amy,vahtras/amy,swcarpentry/amy,vahtras/amy,vahtras/amy,pbanaszkiewicz/amy