Version 2.81.2 (January 2, 2019)
  - Fixed a problem under netbsd, which prevented yabasic from finding
    its own executable
  - Fix on macos for curses-initialization e.g. during "clear screen"
  - Fix that allows libraries to start with a comment introduced by 
    a hash or a single quote
  - Made the prior "Guide into the guts" available again as "Some
    remarks on changing Yabasic"; see www.yabasic.de
  - Document options for unix and windows in the same chapter
