* Moved theme-switcher code to scripts partial file
+ Add author's MIT license to featherlight javascript

+ DocFX by default ships with an older version of jQuery, switching to a newer version confuses parts of the DocFX Javascript.

+ Increase line-height to make pages look less squished.
+ Add master stylesheet.
	- Move content that are not theme-specific to master CSS.
+ Target latest featherlight.js instead of 1.7.6.
+ Add javascript for cornerifying images.
+ Add escape mention image, courtesy of @Andrewww1.

+ Stylized option menu
+ The menu now defaults to whatever theme being the most preferred one