Address exit status when child exits via a signal

Change the exit code to 1 when a child exits with a signal, otherwise continue to exit with the same exit value as the child.

v0.1.9

Add handling for SIGINT

v0.1.7

Bump deps

v0.1.6

Version bump

v0.1.5

build fixes

v0.1.4

build fixes

v0.1.3

build fixes

v0.1.2

action fix

v0.1.1

action fix