Title case panic

[arran4]

Describe the bug

In my tool: (Obviously not your concern see "reproduce")
https://github.com/arran4/rntocase

During the -help I get the following panic

Conversion Examples:
panic: runtime error: index out of range [0] with length 0

goroutine 1 [running]:
github.com/gobeam/stringy.(*input).Title(0x0?)
	/home/arran/.go/path/pkg/mod/github.com/gobeam/[email protected]/stringy.go:368 +0x17f
main.main.func5({0x6a203f?, 0xc000259ce0?})
	/home/arran/Documents/Projects/rntocase/cmd/rntotitle/main.go:45 +0x2d
main.main.func6.2(0xc0002f8100)
	/home/arran/Documents/Projects/rntocase/cmd/rntotitle/main.go:78 +0xd8
slices.AppendSeq[...]({0x0, 0x0, 0x0}, 0xc002a05ae0)
	/usr/lib/go/src/slices/iter.go:50 +0xec
slices.Collect[...](...)
	/usr/lib/go/src/slices/iter.go:58
main.main.func6()
	/home/arran/Documents/Projects/rntocase/cmd/rntotitle/main.go:74 +0x5a5
main.main()
	/home/arran/Documents/Projects/rntocase/cmd/rntotitle/main.go:98 +0x3b3
exit status 2

To Reproduce

stringy.New("   leading spaces").Title()

Expected behavior

TItle case response

Screenshots

N/A

Additional context

N/A