Log Message:
Updated p5-Image-ExifTool to 10.50.

Apr. 20, 2017 - Version 10.50 (production release)

  - Decode a new Pentax tag (thanks Andras Salamon)
  - Improved decoding of Olympus DriveMode (thanks Herbert Kauer)
  - Improved handling of errors from utime when setting file times
  - Fixed potential hang problem when reading corrupted QuickTime metadata
  - Fixed problem deleting duplicate EXIF tags when writing other tags at the
    same time

Apr. 10, 2017 - Version 10.49

  - Added "DateFmt" utility function for use in advanced formatting \ 
expressions
  - Added a new Sony/Minolta LensType (thanks LibRaw)
  - Decode a new Panasonic tag
  - Fixed problem decoding Sony VariableLowPassFilter values (thanks Jos Roost)
  - Fixed problem setting XMP:About when creating new XMP in a file
  - Fixed an incorect Pentax DriveMode value (thanks Andras Salamon)
  - API Changes
      - Allow access to the advanced formatting expression via a new ExifTool
        "FMT_EXPR" member variable

Apr. 3, 2017 - Version 10.48

  - Added some new FujiFlashMode values (thanks Albert Shan)
  - Added a new Sony LensType (thanks Jos Roost)
  - Added a new Canon LensType (thanks LibRaw)
  - Added a new CanonModelID and minor changes to some others (thanks Dmitry)
  - Decode two Pentax tags and added a number of new values for other Pentax
    tags (thanks Andras Salamon)
  - Decode a new Sony tag (thanks Jos Roost)
  - Improvements to the experimental Validate feature
  - Fixed problem which could cause hang when reading bad PPT documents

Mar. 20, 2017 - Version 10.47

  - Added read support for JSON-format files
  - Added two new Sony/Minolta lenses (thanks Jos Roost)
  - Added a number of new Pentax tag values
  - Decode a new Canon CR2 tag (thanks Ed Hannon)
  - Decode WB information for Canon 800D (thanks LibRaw)
  - Improved config_files/photoshop_paths.config to indicate start of paths
  - Attempt to validate new file names in Windows before renaming images
  - Experimental Validate feature no longer warns about Windows XP tags
  - Fixed problem extracting layer information from very large PSD/PSB files

Mar. 8, 2017 - Version 10.46

  - Moved Mac System tags from the Extra table into a new MacOS group and added
    ability to extract them by requesting the MacOS group
  - Updated QuickTime GenreID list (thanks Francois Bonzon)
  - Fixed "Invalid xref" problem when reading some PDF files
  - Fixed error in Minolta lens list (thanks Jos Roost)
  - Fixed minor problem with -U option generating Unknown tags for some known
    bytes in variable-sized strings
  - API Changes:
      - Enhanced RequestTags option to allow groups to be requested

Mar. 2, 2017 - Version 10.45

  - Added ability to write a number of Mac OS X system tags (including the file
    creation date!)
  - Added ability to extract OS X extended attributes ("XAttr" tags)
  - API Changes:
      - Added XAttrTags option
      - Enhanced RequestAll option

Feb. 24, 2017 - Version 10.44

  - Added a few new CanonModelID values and a new Canon LensType
  - Added two new Nikon lenses (thanks Rolf Probst)
  - Added a few new Sony/Minolta lenses (thanks Jos Roost)
  - Added two new Sony MeteringMode values (thanks Jos Roost)
  - Improved verbose dump of Photoshop Layer information
  - Patched to allow "FileName encoding not specified" warnings to be \ 
avoided by
    setting -charset filename=""
  - Fixed problem in photoshop_paths.config printing some paths

Feb. 16, 2017 - Version 10.43

  - Restrict writing of EXIF:FlashEnergy to a single value as per EXIF spec
  - Reverted format change of Sony ImageCount tag
  - Changed PNG new eXIF/zXIF chunk names to "exIf" and \ 
"zxIf" until the
    proposed chunks are accepted (of course, while maintaining backward
    compatibility for reading/updating the other chunks)
  - Lowered priority of XMP-pdf:Keywords so it doesn't take precedence over
    PDF:Keywords when the Duplicates option is not used
  - Improved config_files/convert_regions.config to handle the case where the
    RegionInfoMP is missing a Rectangle

Feb. 10, 2017 - Version 10.42

  - Added ability to read/write PNG eXIF and zXIF chunks, and made these the
    place where new EXIF is created in PNG images (zXIF if the -z option is
    used, or eXIF otherwise)
  - Added ability to copy Photoshop OriginPathInfo with photoshop_paths.config
  - Made FileUserID and FileGroupID writable
  - Changed format for a Sony ImageCount tag
  - Improvements to experimental Validate feature
  - Fixed incorrect XMP swf namespace URI
  - Fixed problem using new -p section feature when combined with -w or -ee
  - Fixed formatting problem in -listx output when -lang option was used
  - Fixed problem where UserComment wasn't removed if found in IFD0 when writing
    it to the correct IFD

Feb. 1, 2017 - Version 10.41

  - Added an experimental metadata validation feature (invoked either by
    requesting the new Extra Validate tag or by setting the API Validate option)
  - Added support for PSDT file extension
  - Added age.config to the distribution
  - Added a new Sony lens (thanks Jos Roost)
  - Added a new PentaxModelID (thanks Louis Granboulan)
  - Enhanced -p option to allow files to be grouped in sections
  - Made makernote offset warning minor
  - Relaxed parsing of NMEA GGA sentence so comma after the geoid units is now
    optional
  - Patched problem extracting value of an unsafe binary tag with the -b option
    when specified using -TAG# instead of -TAG with -n
  - API Changes:
      - Added experimental Validate option