v0.8.0

QuantumToolbox v0.8.0

Diff since v0.7.2

Merged pull requests:

• New eigen solve interface (#71) (@ytdHuang)
• CUDA support (#76) (@ytdHuang)
• Element type conversion for QuantumObject (#78) (@ytdHuang)
• Introduce versioninfo() and about() (#88) (@ytdHuang)
• Immutable QuantumObject (#91) (@ytdHuang)
• Set version to v0.8.0 (#92) (@albertomercurio)

Closed issues:

• New eigen solve interface (#39)
• versioninfo() for QuantumToolbox.jl (#64)
• Make QuantumObject immutable (#90)