:sparkles: feat(config): config option to timeout idle connections within the reqwest pool (#551)

✨ Ranking of aggregated search results based on relevancy of the search result to the user's search query (#549)

✨ feat(config): config option to keep `tcp` connection alive for a certain period for subsequent requests (#548)

✨ feat: config option to timeout requests for fetching search results from the upstream search engines (#545)

:zap: perf: several optimizations for improving the performance of the engine (#540)

:sparkles: config option to configure the https adaptive window size for requests (#529)

:recycle: Clean some code, fix bug (#396)

Merge branch 'rolling' into PERF/384_optimize-the-performance-of-fetching-results-in-the-websurfx-search-engine-backend

⚡️ perf: rewrite the code by using a constant storing a prebuilt client globally for each thread (#384)

♻️ refactor: remove the code to pass the `query` data into the `SearchResults` struct (#302)

♻️ refactor: reimplement the random delay code without the rand crate (#380)

🔧 remove unnecessary clone call (#333)

🔧 Restricts the visibility of the `user-agent` helper module (#331)

Merge branch 'rolling' into reorganize-code-and-restructure-the-codebase

🧹 chore: make github actions happy (#205)

Merge branch 'rolling' into change-document-style-with-linter-warnings

🧹 chore: make clippy happy (#201)

Merge branch 'rolling' into feat-disallow-user-to-search-via-lists

⚙️ refactor: reorganize code & restructure codebase for better maintainability (#207)

⚙️ refactor: change & add documentation to the code based on the lints (#205)

✨ feat: implement new fields, traits and functions (#201)

✨ feat: add condition to filter results only when safe_search level is

⚙️ refactor: add several minor optimizations (#180)(#178)

⚙️ refactor: replace vecs with smallvecs for smaller data sizes & replace to_strings with to_owned (#180)(#178)

⚙️ refactor: replace oncecell with oncelock from std library (#180)(#178)

make format happy

add a test to check if the regex wildcard .* matches any character

add a test for invalid regex

add a test for non-existent file

add some comments to filter_with_lists and add a basic test

Merge branch 'rolling' into feat-error-box-for-engine-errors

Merge branch 'rolling' into feat-error-box-for-engine-errors

✨ feat: optimise search results filtering code (#163)

✨ feat: add code to filter aggregated search results using lists (#163)

Improve aggregation

Improve Aggregation function & config parser

Use non-blocking sleep function

✨ feat: add images, error_box & new message when no results are provided (#185)

🔧 chore: fix link in the logs & add logs for engine error (#170)

✨ feat: improve code documentation

✨ feat: provide the functionality to use the new config option

✨ feat: add documentation for the `outputs.iter()` code block

✨ feat: remove the empty_result_set option and helper functions

✨ feat: rephrase the comment to break it into smaller sentences.

Merge branch 'rolling' into improve-async-multithreading

Rename Things, refactor some code