Passing an environment to `mirai()` loses dot-variables

[shikokuchuo]

For example:

> library(mirai)
> .x <- 1
> mirai(.x, environment())[]
'miraiError' chr Error: object '.x' not found

[shikokuchuo]

Considering:

mirai(.x, environment())

If environment() ends up passing the global environment, it will contain .Random.seed, which will overwrite the correct seed in the daemon.

Need to special case this for passing an environment to ....