Encoding of Inaugural texts

[ssquires82]

Three of the inaugural files have unanticipated encodings:

2005-Bush.txt - uses Macintosh Chinese Traditional encoding
2013-Obama.txt - uses UTF-8 encoding.
2017-Trump.txt - uses UTF-8 encoding.
These will produce character and word errors, if read in as ISOLatin1.

In Macintosh Chinese Traditional encoding, a decimal 161 byte is an escape character. The following two-byte translations are needed for the 2005-Bush.txt file:

{161,88} to -
{161,166} to '
{161,75} to ...
{161,167} to "
{161,168} to "