Support another vector for ignoring index requirements

Add support for ignoring queries that violate an index requirement ba…

…sed on callstack

Support flags for detecting more violations

This release supports detecting queries that scatter (where the WHERE columns don't reference Vitess indexes) and also detection of queries that hit primary databases.

Improve handling of multi-column indexes

v5.0.5

Ignore keys that start with null

Fix a small bug with JOIN index calculation

v5.0.4

Fix join calculation for one-to-many indexes

Use indexes for pre-filtering `WHERE` results

v5.0.3

Use indexes to filter WHERE queries (#102)

Support index calculation

Calculate indexes for all rows (#101)

* Use indexes for fast retrieval

* Remove WHERE index calculation for now

Fix incorrect codegen type

v5.0.1

Fix incorrect codegen type

Use TableSchema object to represent schema information

This changes hack-sql-fake's internal representation of its schema, which is a breaking change for anyone relying on the serialised version.

Whitespace fixes

Fixes whitespace

Json validation improvements

JSON validation should accept string 'null' to match MySQL behavior (…

…#97)

* make json validation accept the string 'null' and convert it to proper null in the database, which matches behavior in MySQL

* make the linter happy

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Co-authored-by: Kevin Tabb <ktabb@Kevins-MacBook-Pro.local>