minitrue.misdirection.affect* should work on arbitrary manglers, not misdirectors

[lvh]

This behavior is useful for other kinds of manglers, too.

[lvh]

This would break the API.

@misdirector
@affect...
@affect...
def f(...):

Would have to become:

@affect...
@affect...
@misdirector
def f(...):

... due to the order decorators are applied in.