Storage list logging

[jacqueswww]

- What I did

Fixes #551.

• Adds support for logging lists from storage.
• Adds support for logging lists from storage.
• Tests.

- How I did it

See pack_args_by_32.

- How to verify it

See #551.

Bar: __log__({_value: num[4]})
x: num[4]

@public
def foo():
    log.Bar(self.x)

@public
def set_list():
    self.x = [1, 2, 3, 4]

MyLog: __log__({arg1: bytes <= 29})
x:bytes<=5

@public
def foo(a:num):
    log.MyLog(self.x)

@public
def setbytez():
    self.x = 'hello'

@public
def getbytes() -> bytes <=29:
    return self.x

- Description for the changelog

- Cute Animal Picture

[fubuloubu]

Testing looks good to me

[DavidKnott]

@jacqueswww Could add test logging a list of a different type?

[jacqueswww]

@DavidKnott sure thing will do.

[jacqueswww]

@DavidKnott done :)

[DavidKnott]

@jacqueswww Thanks, LGTM