New version: PiccoloQuantumObjects v0.3.0

[JuliaRegistrator]

• Registering package: PiccoloQuantumObjects
• Repository: https://github.com/kestrelquantum/PiccoloQuantumObjects.jl
• Created by: @aarontrowbridge
• Version: v0.3.0
• Commit: b6770b6f5c9227f6abaf57a80deccb5174a41e05
• Reviewed by: @aarontrowbridge
• Reference: kestrelquantum/PiccoloQuantumObjects.jl@b6770b6#commitcomment-152386036
• Description: Common quantum objects, isomophisms, and indexing used across the Piccolo.jl ecosystem
• Release notes:

## Breaking changes
- reliance on PiccoloQuantumObjects.jl for rollouts and `free_phase` function

## Changelog
- callback functionality
- new integrator utils for direct sum problems
- other changes and cleaning

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