Question about Calcite History

[Junwen Liu]

Hi Mr. or Ms. :
I'm an engineer who is using Calcite as our Optimizer in our
project.Calcite is an amazing framework that can meet our demands. But I
want to know mostly is the history of Calcite, we also want to create an
open-source project. So I want to know these things about calcite:
1. When did you start this project?
2. What the difference between optiq and Calcite?
3. Where Calcite will go, what features Calcite will support?