Ensure that LAST ID gets called on the same connection of the pool.

[Fixes #61005058]
Remove unnecessary db cleanup code in migrations.

[#60908070]
Fix adapter being hardcoded to MySQL and ensure params get redefined entirely.

[#60908070]
DRY commands function.

[Finishes #60908070]
Allow WHERE clauses to take strings.

[Finishes #60900546]
Update README.
Update .gitignore.
Merge pull request #1 from ostinelli/master

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