Stacked Git 2.5.4

Fixed

• stgit.el: Use with-eval-after-load instead of a homemade version
• stgit.el: Use advice-add instead of defadvice
• stgit.el: Fix various checkdoc warnings
• stgit.el: Support Emacs versions < 31
• stgit.el: Move 'stgit-patch-status-face-alist' before first use
• stgit.el: Silence warnings of missing vc variables
• stgit.el: Replace ad-hoc make-local-variable with defvar-local
• stgit.el: Use defvar-local instead of make-local-variable
• stgit.el: Enable lexical-binding
• stgit.el: Allow empty descriptions
• stgit.el: Add "--no-color" flag to 'git log' and 'git show'
• stgit.el: Pass patch into stgit-process-files

Changed

• chore: update gix to 0.73
• docs: Update copyright year
• feat(bash): complete patches from chosen branch