Replace :ui evil-goggles w/ :ui ophints

Now offers op hinting for non-evil users.

modules/ui/ophints/README.org

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+#+TITLE:   ui/ophints
+#+DATE:    June 4, 2017
+#+SINCE:   v2.0
+#+STARTUP: inlineimages
+
+* Table of Contents :TOC_3:noexport:
+- [[#description][Description]]
+  - [[#module-flags][Module Flags]]
+  - [[#plugins][Plugins]]
+
+* Description
+This module provides op-hints (operation hinting), i.e. visual feedback for
+certain operations. It highlights regions of text that the last operation (like
+yank) acted on.
+
+Uses ~evil-goggles~ for evil users and ~volatile-highlights~ otherwise.
+
+** Module Flags
+This module provides no flags.
+
+** Plugins
++ [[https://github.com/edkolev/evil-goggles/][evil-goggles]]*
++ [[https://github.com/k-talo/volatile-highlights.el][volatile-highlights]]*

modules/ui/ophints/config.el

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+;;; ui/ophints/config.el -*- lexical-binding: t; -*-
+
+(def-package! evil-goggles
+  :when (featurep! :feature evil)
+  :after-call pre-command-hook
+  :init
+  (setq evil-goggles-duration 0.1
+        evil-goggles-pulse nil ; too slow
+        ;; evil-goggles provides a good indicator of what has been affected.
+        ;; delete/change is obvious, so I'd rather disable it for these.
+        evil-goggles-enable-delete nil
+        evil-goggles-enable-change nil)
+  :config
+  (evil-goggles-mode +1))
+
+
+(def-package! volatile-highlights
+  :unless (featurep! :feature evil)
+  :after-call pre-command-hook
+  :config
+  (volatile-highlights-mode)
+  (after! undo-tree
+    (vhl/define-extension 'undo-tree 'undo-tree-yank 'undo-tree-move)
+    (vhl/install-extension 'undo-tree)))

modules/ui/ophints/packages.el

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+;; -*- no-byte-compile: t; -*-
+;;; ui/ophints/packages.el
+
+(if (featurep! :feature evil)
+    (package! evil-goggles)
+  (package! volatile-highlights))