Release 3.0.3

What's Changed

• reader should have a shards dir by @hermeGarcia in #2060
• Simplify kb and shard creation by @jotare in #2052
• madvise by @javitonino in #2050
• Validate that export is compatible when importing by @lferran in #2061
• Bigger k during layer>0 search by @javitonino in #2064
• Allow chat on resource by slug by @lferran in #2067

Full Changelog: v3.0.2...v3.0.3