v0.9.4

Implemented continue command

Like this:

### skip "echo NG" after the continue command ###
🍣 seq 2 | while read d ; do echo x; continue; echo NG ; done
x
x
### skip the outer loop with continue <num> ###
🍣 seq 2 | while read d ; do for a in a b ; do echo x; continue 2 ; done ; echo NG ; done
x
x