Deprecate Time.monotonic

[straight-shoota]

#16490 introduced Time::Instant with Time.instant as a replacement for Time.monotonic.

[jzakiya]

Was there any discussion to just make it Time.now as in Ruby, for compatibility, or was it deliberately to make it different?

After all, Time.instant and Time.now literally say the same things, with the later being shorter.

Just wondering.

[Blacksmoke16]

To be clear, this is a deprecation related to the monotonic clock. Renaming Time.instant to Time.now wouldn't make sense because they represent different kinds of clocks.

There was #9275 to bring back Time.now instead of Time.local, which you can read through for why it was opt-ed not to do that.