feat: partitioned merge pipeline (#828)

Adds the `merge` pipeline (some functionality, at least). 

Blocker:
* Merge pipeline tests

Deferred:
* Grouping / Interpolation - Spread only functions in the unlatched
capacity.

ref: Rename sparrow-execution to sparrow-plan-execution (#817)

bug: temporarily ignore parquet source tests to build windows (#796)

Temporarily ignores parquet source tests in order to pass the windows
build.

locked python client to [email protected] (#764)

created a tag before we lock the old python client to a specific engi…

…ne version and start changing CI

Clean up example script (#747)

add missing quotation in release announcement (#741)

docs: Minor fixes to blogs (#740)

1. Fix the dates so they show up in the right order
2. Include the blog sidebar on posts (it has information about the date,
author, etc.)

docs: Minor fixes to blogs (#740)

1. Fix the dates so they show up in the right order
2. Include the blog sidebar on posts (it has information about the date,
author, etc.)

bug: remove extra quote (#711)