   Initial Release:
   -  rel: 10.02.2019, Major Update
   -  sum: SFK can now search and load office
           file text contents, in Open Office
           format files like .docx .xlsx .ods .odt.
           Search functions now search only in
           text files by default.
   -  CHG: Syntax Change: xfind now only searches
           in plain text files, but not in binaries.
           use xfindbin to search also binary files.
   -  CHG: Syntax Change: find now only searches
           in plain text files, but not in binaries.
           use findbin to search also binary files.
   -  add: ofind, search text in office files like
           .docx .xlsx .ods .odt and plain text files.
   -  add: ofilter, filter text of an office file.
   -  add: oload, load text of an office file
           for display or further processing.
   -  add: sfk help office, for details about
           supported office file extensions.
   -  add: sfk alias, mkcd: support for SFK_PATH
           environment variable, to write batch files
           only into this folder.
   -  chg: sfk getdv: now also suggests to save
           to SFK_PATH if given.
   -  add: echo: option -stream for best output
           transfer to setvar or xed.
   -  dep: xtext is deprecated (redundant to xfind)
   -  dep: ftext is deprecated (redundant to find)
   -  fix: zipto: crash on sub folder names
           containing accent characters,
           especially on select ... +zipto.
   -  chg: sfk data: max content per symbol
           is now 8 kbytes instead of 1.
   -  fix: xed: sfk ... +xed without any patterns
           created unwanted color output.
