1# 2024-05-12-isa-changelog
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3This document describes change log with the following modifications:
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5* Version
6* Bytecode instructions
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8## Version
9We update version from 12.0.1.0 to  12.0.2.0
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11## Bytecode instructions
12To support using top-level sendable class in other sendable classes as closure variable, the sendable lexical environment is implemented and the following bytecode instructions are added to create and operate it.
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14- callruntime.newsendableenv
15- callruntime.widenewsendableenv
16- callruntime.stsendablevar
17- callruntime.widestsendablevar
18- callruntime.ldsendablevar
19- callruntime.wideldsendablevar
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