Default `instanceof Spannable|Editable` to true
Default spacing add and mult to 0.0f and 1.0f
Default mShowSoftInputOnFocus to true
Remove handling long click (I hate long click! What a waste of time!)
Remove unnecessary casting getText() or mText to Spannable or Editable
Remove OnEditorActionListener & related stuffs
Remove URLSpan (autolink's remnant)
Remove all <method>_internal; use direct invocation <method> on mText