dirPlus v2.0

• Changed name from getAllFiles to dirPlus.
• Added 'ReturnDirs' option to collect subdirectory lists.
• Added 'DirFilter' and 'ValidateDirFcn' options to select valid directories.
• Added 'RecurseInvalid' option to modify recursive behavior.

getAllFiles v1.4

Added a new 'Struct' option for returning as output a structure array of file information instead of just a cell array of file names/paths.

getAllFiles v1.3

Updated documentation.