Fix #121

[anykeyh]

Allow column_name option to be used to select a different name for mapping between model's variable and table's column.

Motivation and Context

The option was here already long time ago but never been tested. The option regressed until someone noticed it (#121)

How Has This Been Tested?

A small test has been written to ensure than fundamentals are working. Since I need to rework the test sets, a bigger test set should be done later.

Types of changes

Should not break anything, but change a lot the macros so who knows...

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project. bin/ameba ran without alert.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.