Change prefix-notation to false (#373)

* Change prefix-notation to false

The reasoning is captured in the issue:

#363

tl;dr: it allows for quicker searching and clj(s|c) files don't support
it

* Updated the changelog

Updated it about the change to cljr-favor-prefix-notation default
behaviour.

Author: dotemacs

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Changelog
 
+- [#363](https://github.com/clojure-emacs/clj-refactor.el/issues/363) cljr-favor-prefix-notation by default is set to false
+
 ## Up next
 
 - Display keymap bindings in documentation for minor mode

clj-refactor.el

@@ -105,7 +105,7 @@ This only applies to dependencies added by `cljr-add-project-dependency'."
   :group 'cljr
   :type 'boolean)
 
-(defcustom cljr-favor-prefix-notation t
+(defcustom cljr-favor-prefix-notation nil
   "If t, `cljr-clean-ns' favors prefix notation in the ns form."
   :group 'cljr
   :type 'boolean)