Bump version to 0.105.18 and update change log

CHANGELOG.org

 * Release 0.105.x
+** 0.105.18 (2016/04/10)
+- Revert hotfix for =Yasnippet=, the bug has been fixed upstream and is now
+  available in MELPA (thanks to TheBB)
+- Remove oboslete package =evil-jumper= which is now part of =evil=
+  (thanks to justbur)
 ** 0.105.17 (2016/04/09)
 - Hotfix for Yasnippet, using stable version until resolution of
  https://github.com/capitaomorte/yasnippet/issues/673

init.el

@@ -13,7 +13,7 @@
 ;; (package-initialize)
 
 (setq gc-cons-threshold 100000000)
-(defconst spacemacs-version         "0.105.17" "Spacemacs version.")
+(defconst spacemacs-version         "0.105.18" "Spacemacs version.")
 (defconst spacemacs-emacs-min-version   "24.3" "Minimal version of Emacs.")
 
 (if (not (version<= spacemacs-emacs-min-version emacs-version))