* Added a 'RDLIBRARY.READ_ISRC' field to the database.
* Incremented the database version to 245.
* Added 'RDLibraryConf::readIsrc()' and 'RDLibraryConf::setReadIsrc()'
methods in 'lib/rdlibrary_conf.cpp' and 'lib/rdlibrary_conf.h'.
* Added a 'Read ISRCs from CD' control to the 'Edit RDLibrary' dialog
in 'rdadmin/edit_rdlibrary.cpp' and 'rdadmin/edi_rdlibrary.h'.
* Implemented the 'Read ISRCs from CD' option in the full disc
ripper in 'rdlibrary/disk_ripper.cpp'.
* Implemented the 'Read ISRCs from CD' option in the per-track disc
ripper in 'rdlibrary/cdripper.cpp'.
* Fixed a bug in 'rdlibrary/list_reports.cpp' that broke the
'Cart Data Dump (CSV)' report when the library was filtered by
group.
* Added 'CONDUCTOR', 'SONG_ID' and 'SCHED_CODE' fields to the
'Cart Data Dump (CSV)' report in 'rdlibrary/list_reports.cpp'.
* Implemented the 'RDXPORT_COMMAND_AUDIOSTORE' web API call in
'web/rdxport/audiostore.cpp', 'web/rdxport/rdxport.cpp' and
'web/rdxport/rdxport.h'.
* Added an 'RDAudioStore' class in 'lib/rdaudiostore.cpp' and
'lib/rdaudiostore.h'.
* Modified the Desk Gauge widget in 'rdlibrary/disk_gauge.cpp'
and 'rdlibrary/disk_gauge.h' to use the 'RDAudioStore' class
[fixes GitHub issue #000035].
Allow for saving of edited cart when duplicate cart titles are NOT allowed; Without this fix, it is impossible to edit existing carts when the global configuration does not permit duplicate cart names.
