v0.6.0 - build with tinygo + Go updates

• no local code changes
• security and other updates to golang.org/x/sys dependency
• built with tinygo for reasonable sizes
• no Windows releases because tinygo implements syscall.loadlibrary as panic: todo: syscall.loadlibrary

Note: Webi releases are still pulled from https://git.rootprojects.org/root/pathman/releases.