fix: remove 'release_max_level_off' default feature

[jose-acevedoflores]

Seems like adding:

[features]
default = ["log/release_max_level_off"]

is turning off logging for everything downstream 😅

The log crate docs recommends that libraries should not set any MAX level since that is global (link)

I tried just removing that default feature and the optional dep on log.

[elast0ny]

Thanks for the PR, I will try to implement something like @Xaeroxe mentioned by setting the default features to include logging.

[elast0ny]

Just FYI, logging is now disabled by default as the logging statements are only for debugging purposes. People will have to enable them with --features=logging if they ever want to debug issues with the shared_memory crate itself 👍

Thanks for submitting this PR !