Uses the pessimistic operator for requiring Capistrano 2.12+
Bump version to 1.0.13
Merge branch 'master' of https://github.com/elektronaut/drush-deploy into hotfix/1.0.13
Change rest of dependencies to ~>
Merge branch 'hotfix/1.0.13' into develop

Conflicts:
	README.md
	drush-deploy.gemspec