Recent versions of Go object to the use of non-constant variables a format strings. This commit fixes errors like this: cli.go:26:47: non-constant format string in call to fmt.Fprintf Signed-off-by: W. Michael Petullo <mike@flyn.org>
For example when failing to decode toml, display the context around the error and the location of the problem.
Fixes #721
Fixes #719