v1.3: Allow to force ASCII encoding

This release adds a feature that allows for forcing ASCII encoding on text fields, and also fixes autodetection of ASCII in presence of TAB, CR and LF characters.

v1.2: Add support for Multirecord Area (System UUID only)

This release adds support for creation of MultiRecord area using both command line and JSON template.
The only supported type of record in this release is Management Access Record, and the only subtype
is System UUID.

As always, you can use a JSON template to supply frugen with all the data, or you can add or override the
System UUID using a command line option like this:

 frugen --from template.json -U 83657f75-c8d0-4d5f-97e3-f44337bba3c7 output-fru.bin

The System UUID can be specified both in dashed form like above or without dashes like this:

 frugen --from template.json -U 83657f75c8d04d5f97e3f44337bba3c7 output-fru.bin

For the details on specifying the UUID using a JSON template, please refer to example.json

v1.01: Fix a couple of minor bugs (#5)

Bug fixes integrated