Adding documentation, refactoring, adjusting tests

This is a maintenance release that does what it says in the title...

File registry, reusable jobs, new transforms

Adds support for a project file registry for use in configuring jobs in a simple way

Adds Jobs, including:

• the abstractKiba::Extend::Jobs::BaseJob, which provides the general interface for jobs
• Kiba::Extend::Jobs::Job, which takes one Source file, one Destination file and 0-n Lookup files
• Kiba::Extend::Jobs::TestingJob, which supports an Enumerable source and Lambda destination
• several mixin sources to decorate or otherwise change the behavior of a job

Adds Helper::ExampleFormatter to help with creating documentation that is aligned with specs

Adds Extract::Fields and Deduplicate::Table transforms

Add `Take::First` transform

Takes (i.e. keeps) the first value from a multivalued field

Breaking: Split::IntoMultipleColumns now requires max_segments param

Kiba processes data one row at a time. No single row knows about the qualities of other rows.

Also, it is expected that rows will all have the same fields.

Therefore, it was a problem if one row's value was going to be split into 5 columns, while another row's would be split into 2 columns.

Now you have to tell the Split::IntoMultipleColumns transform how many columns to create. These will be created for all rows and filled in with nil (blank in output spreadsheet) if the split value doesn't fill them all in for a given row.

This is a breaking change To fix any errors, provide a value for the max_segments parameter when calling this transformation.

Underlying code stuff that should not affect use

• Use activesupport instead of facets
• Clean up Gemfile
• Handle loading all .rb files automatically

Enhance `Clean::AlphabetizeFieldValues`

• Move the delim_only? helper method to Transforms::Helpers and add tests and documentation for it
• Add field_values method to Transforms::Helpers to support refactoring
• Enhance Clean::AlphabetizeFieldValues to improve:
  • ability to handle %NULLVALUE% as blanks in the sort
  • ability to set sort direction
  • sort ignores non-alphanumeric and space characters

Fix handling prepending field if target blank or prepend is multival

For target_field=';foo' and prepended_field='q', it was returning
'q: ;q: foo'. Now it returns ';q: foo'

For target_field=';foo' and prepended_field='q;t', it was returning
'q: ;t: foo'. Now it returns ';t: foo'

For target_field='foo;bar;baz' and prepended_field='q;t', it was returning
'q: foo;t: bar;t:baz'. Now it returns 'q: foo;t: bar;baz'

Use Rubocop; minor refactoring, fixes

• Add Rubocop to project
• Do initial autocorrections and a bit of minor refactoring and reformatting

Should not affect function of code, but one never knows what invisible oddities may have crept in.

`Prepend::FieldToFieldValue` with multi-value prepended field

• Makes Prepend::FieldToFieldValue work with multi-value prepended field
• Refactors Explode::ColumnsRemappedInNewRows
• Improves test cases/coverage for several transforms
• Adds documentation (60.62% documented)

add Prepend::FieldToFieldValue transform

• add Prepend::FieldToFieldValue transform
• make add Prepend::ToFieldValue transform work for multivalued fields