Squashed commit of the following:
commit 76689c23011bf960f5ba3e199659e8180455466d
Author: Pine Wu <octref@gmail.com>
Date: Fri Jan 24 10:19:44 2020 +0100
Clarify API
commit 88d772d62da5d912b54285aa52dc6d6a108ca587
Author: Pine Wu <octref@gmail.com>
Date: Fri Jan 24 10:17:28 2020 +0100
Tooltip
commit 11ef8012ae3e560d6db6fff26ba3c258e7eae4a6
Author: Pine Wu <octref@gmail.com>
Date: Thu Jan 23 16:50:28 2020 +0100
Hover to show link color and use cmd/alt click
commit 38655a70b3eed56b99e8018fb5c79bd41b6c4f56
Author: Pine Wu <octref@gmail.com>
Date: Thu Jan 23 15:21:13 2020 +0100
Add hack to always render underline a bit below
commit 959f6b13bf81885cc370f6099e5123142089599e
Author: Pine Wu <octref@gmail.com>
Date: Thu Jan 23 11:32:37 2020 +0100
Fix compile error
commit b5c50e872935e74503451bd2801227f82b8410f4
Author: Pine Wu <octref@gmail.com>
Date: Thu Jan 23 11:19:52 2020 +0100
Bring code link everywhere for Diagnostics
commit f88cd4cc4e2064fd96853373e26c12670161bf60
Author: Pine Wu <octref@gmail.com>
Date: Wed Jan 22 17:24:54 2020 +0100
Add Diagnostic#code2 and render it in hover/inline/panel
commit 2a13e3e4f62fd3707f2c03c1e814a8fdc557c367
Author: Pine Wu <octref@gmail.com>
Date: Wed Jan 22 13:49:42 2020 +0100
WIP
