v0.4.4

Implemeted fg command.

• example:

🍣 while sleep 1 ;do echo abc ;done | rev
cba
cba
^Z             #Ctrl+Z
🍣 jobs
[1]+  Stopped     while sleep 1 ;do echo abc ;done | rev
🍣 fg
while sleep 1 ;do echo abc ;done | rev
cba
cba
cba
^C[1]+  Interrupt     while sleep 1 ;do echo abc ;done | rev