shunt 0.3.0

Run multiple commands in single terminal with docker compose like logs.
   Compiling gather v0.1.0 (/Users/ogage/projects/gather)
    Finished dev [unoptimized + debuginfo] target(s) in 0.75s
     Running `target/debug/gather ./resources/out2.json`
[int1] stderr 0
[int3] stderr 0
[int3] stderr 1
[int1] stderr 1
[int3] stderr 2
[int1] stderr 2
[int1] stderr 3
[int3] stderr 3
[int1] stderr 4
[int3] stderr 4
[int1] stderr 5
[int3] stderr 5
[int3] stderr 6
[int1] stderr 6
[int3] stderr 7
[int1] stderr 7
[int3] stderr 8
[int1] stderr 8
[int3] stderr 9
[int1] stderr 9
[int3] output 0
[int3] output 1
[int3] output 2
[int3] output 3
[int3] output 4
[int3] output 5
[int3] output 6
[int3] output 7
[int3] output 8
[int3] output 9
"int3" exit status: 0.
[int1] output 0
[int1] output 1
[int1] output 2
[int1] output 3
[int1] output 4
[int1] output 5
[int1] output 6
[int1] output 7
[int1] output 8
[int1] output 9
"int1" exit status: 0.