Rustbase v0.5.0

What's Changed

• feat: insert user without assgnexpr by @peeeuzin in #50
• feat: authorization by @peeeuzin in #51
• feat: adding errors handlers by @peeeuzin in #52
• fix: exit loop when vec is empty by @peeeuzin in #53
• feat: snapshots by @peeeuzin in #55
• refactor: engine by @peeeuzin in #56
• feat: renaming restore to snapshot by @peeeuzin in #57

Full Changelog: v0.4.0...v0.5.0