Add RSS2.0, Atom feed examples

What's Changed

• Update-gomy-version by @devlights in #524
• Add-stdlib-plugin-pkg-example by @devlights in #525
• Add-time-trucate-example by @devlights in #526
• Add-generics-examples by @devlights in #527
• Add-aliastype-definedtype-diff by @devlights in #528
• Add-string-builder-benchmark by @devlights in #529
• Add-scanner-custom-splitfunc by @devlights in #530
• Add-http-examples by @devlights in #531
• Add-webapp-using-template by @devlights in #532
• Add-generic-example by @devlights in #533
• Add typeset.go, underlyingtype.go by @devlights in #534
• Add-time-examples by @devlights in #535
• Add-time-examples by @devlights in #536
• Add time_json_custom.go by @devlights in #537
• Add-socket-example by @devlights in #538
• Update-gomy-version by @devlights in #539
• Add-go-test-example by @devlights in #540
• Update-gitpod-config by @devlights in #541
• Update-socket-example by @devlights in #542
• Add-three-index-slice-example by @devlights in #543
• Add-generic-exp-pkg-examples by @devlights in #544
• Add-panic-example by @devlights in #545
• Add-select-example by @devlights in #546
• Add-rss2-example by @devlights in #547

Full Changelog: v0.4.1...v0.4.2