Drop support for old emacsen

This is done to match CIDER's requirements.

Author: expez

.travis.yml

@@ -5,8 +5,6 @@ before_install:
   - evm install $EVM_EMACS --use --skip
   - cask
 env:
-  - EVM_EMACS=emacs-24.4-travis
-  - EVM_EMACS=emacs-24.5-travis
   - EVM_EMACS=emacs-25.1-travis
 script:
   ./run-travis-ci.sh

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Unreleased
 - Hotload dependency temporarily disabled to make the middleware run on Java 10.
 
+- Dropped support for emacs < 25.1 (to match CIDER).
 - [#426](https://github.com/clojure-emacs/clj-refactor.el/issues/426) New variable, `cljr-middleware-ignored-paths`, to make the middleware ignore certain paths.
 - [#408](https://github.com/clojure-emacs/clj-refactor.el/pull/408) New `cljr-before-warming-ast-cache-hook`, `cljr-after-warming-ast-cache-hook` callbacks around AST warming.
 - [#394](https://github.com/clojure-emacs/clj-refactor.el/issues/394) New config option `cljr-assume-language-context`: by default, when clj-refactor encounters an ambiguous context (clj vs cljs) it creates a popup asking user which context is meant. If this option is changed to "clj" or "cljs", clj-refactor will use that as the assumed context in such ambigous cases.

clj-refactor.el

@@ -8,7 +8,7 @@
 ;;         Benedek Fazekas <[email protected]>
 ;; Version: 2.4.0-SNAPSHOT
 ;; Keywords: convenience, clojure, cider
-;; Package-Requires: ((emacs "24.4") (s "1.8.0") (seq "2.19") (yasnippet "0.6.1") (paredit "24") (multiple-cursors "1.2.2") (clojure-mode "5.6.1") (cider "0.17.0") (edn "1.1.2") (inflections "2.3") (hydra "0.13.2"))
+;; Package-Requires: ((emacs "25.1") (s "1.8.0") (seq "2.19") (yasnippet "0.6.1") (paredit "24") (multiple-cursors "1.2.2") (clojure-mode "5.6.1") (cider "0.17.0") (edn "1.1.2") (inflections "2.3") (hydra "0.13.2"))
 
 ;; This program is free software; you can redistribute it and/or
 ;; modify it under the terms of the GNU General Public License