v1.2.1-pre

• Feature pruning options
• New graph (PLOIG), where nodes represent objects and edges represent atoms and goals. See Silver et al., AAAI'21 and Rivlin et al., CoRR'20 for more details.

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What's Changed

• Merge dev changes by @DillonZChen in #5
• Dev by @DillonZChen in #7
• Pruning options by @DillonZChen in #8

Full Changelog: v1.1.1...v1.2.1-pre