Log Message:
shells/nushell: update to 0.40.0

Today, we're releasing 0.40 of Nu. This release is includes better table imports
and much smaller release size.

What's New
-Detecting columns (jt)
 Nushell now supports a new command: detect columns. This command is intended as
 an easy way to handle tabular data that's written as text. Commands like ps,
 ls -l, netstat, df, and others commonly output their output as text.
 With detect columns, you can run the external command, and convert them into
 Nushell's tabular data format.

-Smaller binaries (fdncred)
 The size of the Nushell release binaries has come up as regular feedback from
 Nushell users. "Why does the shell have to be so big?" And we've \ 
heard you!
 Today's release now uses a combination of strip and upx to bring considerable
 savings in binary size. The Linux release (plugins incl.) has dropped from
 475mb to 58mb(!!), making it 88% smaller. We're seeing similar improvements in
 the sizes of the macOS and Windows releases.