Similar to the earlier request for ruby-on-rails
implied relations - add an option that causes
schemaspy to map relationships for 'utility' tables
when a column name in one table matches to any other
tables with indexed columns with the same name. So
only link if the column names, type, and size are the
same and the column being linked to has an index.
Might be nice to be able to supply a regex with the
option that tells it which tables to do this for -
with the default being all tables.
Example - adding the -link option would trigger this
for all tables, using -link "(invoice.*)|(order.*)"
would only link the tables that start with invoice or