Corrected a description in the change log.
Corrected a description in the readme.md file.
Updated the documentation guideline.
Fixed a bug that the user submitted values of select type fields with the multiple attribute enabled got affected by the default values.
Rephrased a method description.
Rephrased a comment.
Adjusted the style for displaying array contents (saved options) and code.
Reverted the default value of the select type field.
Applied the changes to the minified version.