@_abo_abo is there a lispy equivalent of paredit-backward-down? I've read https://oremacs.com/lispy/ but I can't spot anything.
miniblog.
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Contrasting a Rust specification (being worked on) with a Rust ISO standard (which may not work as well as the existing RFC process), and backward compatibility promises: https://blog.m-ou.se/rust-standard/
(The entire Rust ecosystem is run against new rustc versions surprisingly often too)
Python is arguably a great PL for a long term project. I can't imagine there will ever be a Python 4 breaking backward compatibility.
Really useful list of major #Python features and when they were added (for writing backward compatible libraries): http://t.co/JKxpQC4EJI