Pyth Agent v2.10.4

This release mostly makes the changes of the previous release (batch flushing) optional and adds notes on when that can be enabled in the Best Practices section in Readme.

What's Changed

• fix: ignore product without price on polling by @ali-bahjati in #133
• fix: disable batch flushing by default by @ali-bahjati in #139

Full Changelog: v2.10.3...v2.10.4