grim v1.2.0

This release adds support for the PPM format. This is useful for speeding up
grim when piping its output into another process.

27 (1):
      Clarified installation instructions in README.md (#52)

Jan Beich (1):
      Convert to Meson feature options

Josef Gajdusek (2):
      Add support for the ppm output format
      Actually output ppm when piping to stdout

Simon Ser (2):
      Fix help message alignment
      Bump to v1.2

emersion (1):
      meson: bump version to 1.1