Create rainbow text heavily inspired by lolcat.
Example usage:
package main
import ("fmt"
"github.com/nosmo/raingow"
)
func main() {
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 1.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 2.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 3.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 4.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 5.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 6.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 7.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 8.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line", 9.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line reversed", 3.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line offset 1", 3.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line offset 2", 3.0))
fmt.Println(raingow.Raingow_line("My fairly long long long long long long long long long testing line offset 3", 3.0))
}