v0.5.2

What's Changed

• Add internals blog series: 11 posts on how Mash works inside by @imsid in #12
• Rewrite product brief as a pitch and split out Mash Under the Hood by @imsid in #13
• Rewrite posts in a flatter voice and add a Host API and CLI post by @imsid in #14
• Make host composition dynamic over a flat agent pool by @imsid in #15

Full Changelog: v0.5.1...v0.5.2