Test release: 5.5.1-test-2.

Test release: 5.5.1-test-1.

Release 5.5.1.

Release 5.5 of zsh

Test version 2 prior to zsh 5.5.

Test release before zsh-5.5

Release 5.4.2

Tag zsh 5.4.1 the normal way.

Tag zsh 5.4 the normal way.

Release 5.4.1.