Macro log_assert

macro_rules! log_assert {
    ($cond:expr) => { ... };
    ($cond:expr,) => { ... };
    ($cond:expr, $($arg:tt)+) => { ... };
}

Will log and panic when condition not met.

The arguments are like core::assert!().

Examples:

use captains_log::*;
let user_id = Some(111);
log_assert!(user_id.is_some());
log_assert!(user_id.is_some(), "user must login");