v3.6.2

Features

• dns: add support lookup from /etc/hosts (Jianhui Zhao)
• bump version 3.6.2 (Jianhui Zhao)

Bug Fixes

• file: Fix file descriptor leak in file.sync (Jianhui Zhao)

Performance Improvements

• return clearer error messages for sys.exec (Jianhui Zhao)

Chores

• rename method release to close for sys.exec. (Jianhui Zhao)