Prepare 1.5.1 release
Prepare 1.5.1 release

gisenberg/git-utils,greensnark/git-utils,tjkr/git-utils,gisenberg/git-utils,atom/git-utils,tjkr/git-utils,greensnark/git-utils,atom/git-utils,cblp/git-utils,cblp/git-utils,atom/git-utils