v5.0 Release

#86 – Improved options and possibilties with RWH
#85 – Ability to add ‘full raw headers’ of email message (only in english)
#82 – Outlook Reply-All Parity with Apple Mail
#86 – Added ‘Importance’ header attribution
#86 – Improved ‘Date’ parsing & formating as per Locale
#86 – Header line spaces (before seperator, before header & after header)
#80 – Addressed an issue of Account Tab can’t resize while in focus