0.4.0

What's Changed

• Hand a captured chunk to its sink once by @alganet in #52
• Translate the errno a failed mount reports by @alganet in #53
• Leave nothing allocated by a refused request by @alganet in #54
• Guard phasmStartup() like the other entry points by @alganet in #55
• Fix three defects in the phasm SAPI by @alganet in #56
• Take the wasi-sh that names a file's mode by @alganet in #58
• Take request headers in the shape they arrive by @alganet in #59
• 0.4.0 by @alganet in #60

Full Changelog: 0.3.0...0.4.0