upgraded electrum to version 1.9.8 (closes #4)

verified:

    gpg: Signature made Mon Mar 17 22:14:09 2014 IST using RSA key ID 7F9470E6
    gpg: Good signature from "Thomas Voegtlin <thomasv1@gmx.de>"
    gpg:                 aka "ThomasV <thomasv1@gmx.de>"
updated changelog for 13.0.1 release