* Added an 'RDMatrix::BtGpi16' value to the 'RDMatrix::Type'
enumeration in 'lib/rdmatrix.cpp' and 'lib/rdmatrix.cpp'.
* Implemented a driver for the Broadcast Tools GPI-16 in
'ripcd/btgpi16.cpp' and 'ripcd/btgpi16.h'.
* Fixed a bug in 'lib/rdcut.cpp' that caused the 'Title' value
to be applied to the 'Description' field in the 'RDCut::setMetadata()'
method.
* Added 'docs/metadata_wildcards.txt'.
* Implemented support for the '%i' ['Cut Description'] wildcard in
rdimport(1)'s '--metadata-pattern' switch in
'utils/rdimport/rdimport.cpp' [Github Issue #6].
* Implemented support for the '%o' ['Outcue'] wildcard in
rdimport(1)'s '--metadata-pattern' switch in
'utils/rdimport/rdimport.cpp'.
* Implemented support for the '%y' ['Release Year'] wildcard in
rdimport(1)'s '--metadata-pattern' switch in
'utils/rdimport/rdimport.cpp'.
