fedora updates

I’ve submitted the following packages to the fedora repositories:

package version release changes
golang-github-AudriusButkevicius-kcp-go 0 0.1.20170902.gitd17218b initial package
syncthing 0.14.38 1 bugfix update (Changelog)
slingshot-launcher 2.2.0 1 bugfix update (Changelog)