v0.3.0

This release adds support to the CLI for using Go package patterns like ./...
to match and transform files.
You can now use errtrace -w ./... to instrument all files in a Go module,
or errtrace -l ./... to list all files that would be changed.

Added

• cmd/errtrace: Support Go package patterns in addition to file paths.
  Use errtrace -w ./... to transform all files under the current package
  and its descendants.

Changed

• cmd/errtrace:
  Print a message when reading from stdin because no arguments were given.
  Use '-' as the file name to read from stdin without a warning.