Collect RR and DIR results using collect_results.py

See merge request !106

Add sequential and parallel processors, pre-processors, and extractors

Closes #95

See merge request !102

Experiment info location

Closes #71

See merge request !105

Created a dummy db that dump some fake missing files

See merge request !104

Removed dummy-missingfiles database

Created a mechanism to return None at certain probability

make two copies of training data to make the code simpler.
Add options for overridng read and write methods in callables.
remove confusing returns. make parallel ones generators

Propagated the  option --allow-missing-files .....

See merge request !103

Remove try and catches
Accept kwargs in init signature of processors

Resolve "The new way of using a single configuration file is not tested yet"

Closes #94

See merge request !100

Resolve "The flag 'execute_only' cannot be placed in a config file"

Closes #92

See merge request !99

Resolve "doc/experiments.rst points to deprecated docs location"

Closes #91

See merge request !98