0.69.5

Made improvements to piccolo schema generate, which automatically generates Piccolo Table classes from an existing database.

There were situations where it would fail ungracefully when it couldn't parse an index definition. It no longer crashes, and we print out the problematic index definitions. See PR 449. Thanks to @gmos for originally reporting this issue.

We also improved the error messages if schema generation fails for some reason by letting the user know which table caused the error. Courtesy @AliSayyah.