You can install Planner from the source archive packaged and distributed directly by the maintainer. This archive is provided in both .tar.gz and .zip format. If you don't know where to extract these archives, create a ~/elisp directory, and extract them there.
Replace /path/to with wherever you extracted the files.
;; Add the directories to your load path (add-to-list 'load-path "/path/to/muse/lisp") (add-to-list 'load-path "/path/to/planner") (add-to-list 'load-path "/path/to/remember") ;; Load planner (require 'planner)
Download a new version and extract it over the old directory. Don't forget to delete any byte-compiled files (*.elc) in the directories (which can be accomplished by running “make clean”) so that the new code will be used.