Python provides better tools that exceptions for that.

Fix wrong instance variable name in error message

See merge request !68

Fix wait method

Closes #30

See merge request !67

Improve CachedDataSink error messages

See merge request !66

If the opening of the cache file fails, print an error
message to know where to look at.

Completely remove "license_file" entry on conda recipe

Closes #28

See merge request !65

See bob.devtools#44 and bob.devtools!127

[utils] Fix hash generated by storage classes

See merge request !64

The hash doesn't match what is done in beat/beat.web> resulting
in a mismatch when using e.g. beat/beat.cmdline>.

This patch modifies the code so that the returned value
follows the same logic as used in beat/beat.web>

[docedit] removed Biometrics evaluation from BEAT definition

See merge request !63

Improve AstractStorage error message in constructor

See merge request !62

Improve synchronized output handling

Closes #27

See merge request !61

This allows the evaluator to properly write to its own
output as the method is called each time a processor
output is written to.

Fixes #27

Currently there's nothing in the log so if there's an error,
the result will be a missing file error.

[execution][messagehandlers] Fix write end_data_index handling in LoopMessageHandler

See merge request !60

The None value is not properly handled and ends up
triggering a warning while it is a valid value for
end_data_index.

This patch fixes this.