[GRASS-git] [OSGeo/grass-addons] 076ca2: r.confusionmatrix: Support usage of a single class...

[griembauer]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-addons
  Commit: 076ca2969230b9dbb7528ab5b4161817128145f1
      https://github.com/OSGeo/grass-addons/commit/076ca2969230b9dbb7528ab5b4161817128145f1
  Author: griembauer <62383722+griembauer at users.noreply.github.com>
  Date:   2021-01-20 (Wed, 20 Jan 2021)

  Changed paths:
    M grass7/raster/r.confusionmatrix/r.confusionmatrix.py
    M grass7/raster/r.confusionmatrix/testsuite/data/confusionmatrix_raster_matrix.csv
    A grass7/raster/r.confusionmatrix/testsuite/data/confusionmatrix_raster_matrix_oneclass.csv
    M grass7/raster/r.confusionmatrix/testsuite/test_r_confusionmatrix.py

  Log Message:
  -----------
  r.confusionmatrix: Support usage of a single class in reference (#409)

* add handling for single class
* remove unnecessary line printing
* add test
* change csv.writer linedelimiter to `\n`