feat: Drop Emacs 27.x (#786)

Author: jcs090218

.github/workflows/docs.yml

@@ -14,7 +14,7 @@ jobs:
 
       - uses: purcell/setup-emacs@master
         with:
-          version: 27.1
+          version: 28.1
 
       - uses: conao3/setup-cask@master
         with:

.github/workflows/test.yml

@@ -21,7 +21,6 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         emacs-version:
-          - 27.2
           - 28.2
           - 29.4
           - 30.1
@@ -36,9 +35,6 @@ jobs:
           - os: windows-latest
             emacs-version: snapshot
             experimental: true
-        exclude:
-          - os: macos-latest
-            emacs-version: 27.2
 
     steps:
       - uses: jcs090218/setup-emacs@master

Eask

@@ -11,10 +11,10 @@
 
 (script "test" "echo \"Error: no test specified\" && exit 1")
 
-(source "gnu")
-(source "melpa")
+(source 'gnu)
+(source 'melpa)
 
-(depends-on "emacs" "27.1")
+(depends-on "emacs" "28.1")
 (depends-on "dash")
 (depends-on "lsp-mode")
 (depends-on "markdown-mode")

lsp-ui.el

@@ -6,7 +6,7 @@
 ;; Author: Sebastien Chapuis <[email protected]>, Fangrui Song <[email protected]>
 ;; Keywords: languages, tools
 ;; URL: https://github.com/emacs-lsp/lsp-ui
-;; Package-Requires: ((emacs "27.1") (dash "2.18.0") (lsp-mode "6.0") (markdown-mode "2.3"))
+;; Package-Requires: ((emacs "28.1") (dash "2.18.0") (lsp-mode "6.0") (markdown-mode "2.3"))
 ;; Version: 9.0.0
 
 ;;; License