Update e-mail of author of ipa-x-sampa table
Use SELECT_KEYS = F1,F2,F3,F4,F5,F6,F7,F8,F9 for ipa-x-sampa

Requires ibus-table >= 1.8.4.

Select keys like F1, F2, F3, ... are necessary for the ipa-x-sampa
table which has:

VALID_INPUT_CHARS == +!\%&'-./0123456789:<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~"

Therefore, using 1, 2, 3, ... as the select keys for ipa-x-sampa
is bad because it makes it impossible to input the following
entries of the ipa-x-sampa table:

    1       ɨ       0       ### U+0268 LATIN SMALL LETTER I WITH STROKE
    2       ø       0       ### U+00F8 LATIN SMALL LETTER O WITH STROKE
    3       ɜ       0       ### U+025C LATIN SMALL LETTER REVERSED OPEN E
    3\      ɞ       0       ### U+025E LATIN SMALL LETTER CLOSED REVERSED OPEN E
    4       ɾ       0       ### U+027E LATIN SMALL LETTER R WITH FISHHOOK
    5       ɫ       0       ### U+026B LATIN SMALL LETTER L WITH MIDDLE TILDE
    6       ɐ       0       ### U+0250 LATIN SMALL LETTER TURNED A
    7       ɤ       0       ### U+0264 LATIN SMALL LETTER RAMS HORN
    8       ɵ       0       ### U+0275 LATIN SMALL LETTER BARRED O
    9       œ       0       ### U+0153 LATIN SMALL LIGATURE OE

    _0      ̥        0       ### U+0325 COMBINING RING BELOW
    _1      ₁       0       ### U+2081 SUBSCRIPT ONE
    _2      ₂       0       ### U+2082 SUBSCRIPT TWO
    _3      ₃       0       ### U+2083 SUBSCRIPT THREE
    _4      ₄       0       ### U+2084 SUBSCRIPT FOUR
    _5      ₅       0       ### U+2085 SUBSCRIPT FIVE
    _6      ₆       0       ### U+2086 SUBSCRIPT SIX