"chuck tokens" does not delete trailing space when using slice

[jmegner]

If you have...

a b c
d e f
g h i

... then "chuck two tokens air slice gust" leaves beginning spaces before the c f i. Just "chuck two tokens air" will not leave a space before c. "chuck tokens" should probably have consistent behavior regardless of usage of slice.

Some workarounds:

• take air slice gust chuck two tokens (take then chuck)
• pre cap slice sit chuck head (pre then chuck)

[pokey]

Fwiw the issue is that the "two tokens" modifier first runs on "air" to determine the width of the slice, and then "gust" is only used to figure how many lines downward to extend this fixed-width vertical slice

I would argue that instead we should first run "air slice gust", and then run "two tokens"

See #193 for way more context than you probably want 😂