Package-Build 4.0.0

Package-Build 3.2

Package-Build 3.1

package-build-all: Fix use of with-demoted-errors

Package-Build 2.4

Package-Build 2.3

Package-Build 2.2

Package-Build 2.1

Merge pull request melpa#16 from melpa/interface

Improve recipe interface

package-build--princ-{exists,checkout}: inline