Add new metrics

[michellepicoli]

• Add metrics from Costa's paper (Supervised methods of image segmentation accuracy assessment in land cover mapping).

[michellepicoli]

1- OS2 citation: Persello and Bruzzone (2010) 2- OS1 citation: Clinton et al. (2010) 3- US2 citation: Persello and Bruzzone (2010) 4- US1 citation: Clinton et al. (2010) 5- AFI citation: Lucieer and Stein (2002) and Clinton et al. (2010) 6- QR citation: Weidner (2008) and Clinton et al. (2010) 7- D_index citation: Levine and Nazif (1982) and Clinton et al. (2010) 8- precision citation: Van Rijsbergen (1979) and Zhang et al. (2015) 9- recall citation: Van Rijsbergen (1979) and Zhang et al. (2015) 10- underMerging citation: Levine and Nazif (1982) and Clinton et al. (2010) 11- overMerging citation: Levine and Nazif (1982) and Clinton et al. (2010) 12- M citation: Janssen and Molenaar (1995) and Feitosa et al. (2010) 13- E citation: Carleer et al. (2005) 14- RAsub citation: Möller et al. (2007) and Clinton et al. (2010) 15- RAsuper citation: Möller et al. (2007) and Clinton et al. (2010) 16- PI citation: van Coillie et al. (2008) 17- F citation: Costa et al. (2008) 18- OS3 citation: Yang et al. (2014) 19- US3 citation: Yang et al. (2014) 20- ED3 citation: Yang et al. (2014) 21- F_measure citation: Van Rijsbergen (1979) and Zhang et al. (2015)