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Cleaning up the GoLand cache and log directories

When GoLang gets upgraded from one version to the next, the upgrade process create a new set of per-user directories for the configuration, cache, and logs of the new version.

Fix GoLand 'Make' run configurations not finding Go

In a GoLand make run config, tasks defined in the Makefile correctly find the go binary on macOS, but not on Ubuntu, causing errors like this one :

Tip of the day: PHP-compatible CRC32

PHP includes crc32() and hash("crc32") functions.

Do they have an exact counterpart in the Go runtime library ?