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Update Getopt-Long to CPAN version 2.47
[DELTA]
Changes in version 2.47
-----------------------
* Fix bug https://rt.cpan.org/Ticket/Display.html?id=89513.
Should have done that earlier :)
This changes the format for accepted float numbers:
<optional sign>
<optional mantissa>
<optional dec.point and fraction>
<optional "e" and exponent>
Mantissa and decimal fraction may not both be omitted.
Underscores are permissible virtually anywhere in numbers for clarity.