Added function echo_n which does not print a newline after the arg.

[gryffyn]

I realize that creating an entire new print function is probably the best way to go, but in the spirit of bash, I propose creating a new function echo_n that doesn't print any newlines. The name obviously comes from the fact that echo -n is the way to not output a trailing newline.

Solves #374.

[odino]

hey @gryffyn, sorry for missing this one out! 😮

I think a completely separate function is a bit annoying, I could be open to maybe having a default named argument such as echo("%string", "s", newline=false). What do you think?

[gryffyn]

Oh yeah for sure, I wasn't sure how you wanted to do it, this was 100% intended as more of a stopgap measure for my own use. Having a param like that sounds great.