Release v2.14.2 (Preview new CFG API, Deprecated Arguments)

What's Changed

• [Linter] Detect unused imports by @lou7202 in #2627
• [DF] remove killed symbols from out list by @EagleoutIce in #2723
• Suggest helper objects for r syntax node checks by @EagleoutIce in #2724
• Track implicit echo in dependencies query by @EagleoutIce in #2726
• Simplify implementation, consistent matching and signature db by @EagleoutIce in #2727
• [Linter]: Support for deprecated arguments by @gigalasr in #2630
• Add OpenSearch Description File for SigDB by @MaxAtoms in #2729
• New CFG API by @EagleoutIce in #2730

Full Changelog: v2.14.1...v2.14.2