Allow for negative thresholds.

Resolve "Detection & Identification Curve cannot be right on user's guide"

Closes #34

See merge request !40

Fixed issue with FAR and FRR values being exactly 1 or 0, respectively

See merge request !41

Merge branch '27-far-and-frr-thresholds-are-computed-even-when-there-is-no-data-support' into 'master'

Resolve "FAR and FRR thresholds are computed even when there is no data support"

Closes #27

See merge request !39

Merge branch '27-far-and-frr-thresholds-are-computed-even-when-there-is-no-data-support' of https://gitlab.idiap.ch/bob/bob.measure into 27-far-and-frr-thresholds-are-computed-even-when-there-is-no-data-support

Conflicts:
	bob/measure/cpp/error.cpp
	bob/measure/plot.py
	bob/measure/test_error.py

Updated CMC documentation

Closes #29

See merge request !35

Fixed bob.math requirement (cf. bob.math#12 and bob.learn.em!29)

See merge request !37

Docs url fix

See merge request !36

This package works only with bob.math >= 3.0.0

See merge request !33

Resolve "Updated API in `bob.math` requires update in this package, too"

Closes #28

See merge request !32

Fix docs on py27 following changes to the list class

See merge request !30

Add an option to the epc function to also get the thresholds which were used during calculation

See merge request !28