v0.5

Features

• Merge img-resize & img-chroot to img-tool
• Compatible w flash cards (mount block devices). But it doesn't work on macOS, because docker use Hyperkit (and it doesn't allow passthrough USB-devices)
• Mounting and loopbacking by the size of partitions (don't use partscan option)
• No more mount /dev
• Rewrite size()
• Update documentation