Piicatcher

New
Glue support and Postgres tests. [Rajat Venkatesh]

Add support to add parameters in Glue catalog with metadata on PII.
The commit also contains the following major changes:
- Reorganize output format options to add glue.
- Rename orm to store.
- Rename models to db.
- Remove a couple of warnings in tests.
- Refactor explorers and add glue store.
- Enable postgres tests

New
- Update README for Athena Support. [Rajat Venkatesh]

Add AWS Glue/Athena/S3 to the supported list.
Add usage for aws.
- Scan PII data in AWS S3 tables using AWS Athena. [Rajat Venkatesh]

PiiCatcher add support to scan AWS Glue tables with data in AWS S3 and
available for querying through AWS Athena.

Deep scan uses table sampling where databases support it.
Moreover deep scans 10 rows only.

Fix

- Fixes for MSSQL. [Rajat Venkatesh]

Fix catalog and sample query for mssql.
MS SQL has catalog (or database) and schema. Fix queries to use the 4-stage namespace
correctly.
- Move connection type to database options. [Rajat Venkatesh]

Fix
---
- Fix listing and processing columns for Oracle. [Rajat Venkatesh]

Change column scanner regex to ignore case.
Add an option to not list all the columns.
Oracle query adds a literal for schema name.
Choose a full scan query instead of a sample query if number of
rows is less than 100.

fix 22

* Add config files to generate changelog
* Update cryptography due to security advisory