Mlautomator

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**Improvements**
- Added support for model persistence once training has finished - including and transformation models.

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**Bugfixes**

- Fixed errors arising in testing because `self.objective` was replace with `self._objective` but not changed in the test suite.

**Improvements**

- Added coverage and links to shield.io badges on README.md

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**Bugfixes**

- Added conditions to catch the case where a search hasn't been executed on the data but user tries to print a summary
anyway

**Improvements**

...birth!