releaser: Add release notes draft for 0.40
releaser: Add release notes draft for 0.40

Rename to *-ready.md to continue. [ci skip]

anthonyfok/hugo,mdhender/hugo,gohugoio/hugo,fedelibre/hugo,fedelibre/hugo,mdhender/hugo,anthonyfok/hugo,fedelibre/hugo,fedelibre/hugo,mdhender/hugo,anthonyfok/hugo,mdhender/hugo,gohugoio/hugo,gohugoio/hugo