Do not run tests for DummyExecutor if we do not have backend solvers.
Check or-tools pathes that will be included.
Move Task and Result out of Executor and make them part of Pipeline.
Reuse new pipeline API and fix logging messages.
Reuse new pipeline API.
Fix typo.
Merge pull request #3 from d2rk/refactor_executor

Refactor executor
Fix rows names, problem name and problem view.
Fix default logging format.
Merge pull request #4 from d2rk/fix_logging

Fix default logging format
Relaxations are no longer self existed techniques but part of the group of backend solvers. User may set relaxation solver as default backebd solver.
Merge pull request #5 from d2rk/relaxations_support

Add relaxations support
Add mechanism to solve monolit models (when decomposer is not able to decompose them).
Add MPS writer.
Add objective name.
Add MPS Writer tests.
Merge pull request #6 from d2rk/mps_writer

Add MPS writer
Add MPS package and create MPS format encoder and decoder.
Merge pull request #7 from d2rk/refactor_mps

Add MPS package and create MPS format encoder and decoder
Move build methods to builder MPModelBuilder.