v1.5.1

Sandbox v1.5.1

Diff since v1.5.0

Closed issues:

• Resource management (#29)
• select_executor is slow (#76)
• Inconsistency in mutability of read-only maps with persistence (#105)

Merged pull requests:

• Expand testing to aarch64 (#103) (@staticfloat)
• Add a couple of precompilation statements (#108) (@giordano)