Release v3.4.0

• Minor fixes.

• Proof of presence feature: Any founder can create the events for the community member and member can get there proof of presence on the chain after attending the event.

What's Changed

• Bump zerocopy from 0.7.26 to 0.7.31 by @dependabot in #246
• Updated dependencies by @Polkaverse in #247
• Added event type badges by @Polkaverse in #248
• Release Train v3.3.0 by @Polkaverse in #245
• develop to staging by @Polkaverse in #249
• Feat: Proof of Presence by @Polkaverse in #251
• Bump futures from 0.3.29 to 0.3.30 by @dependabot in #250
• develop -> staging by @Polkaverse in #252
• Release train 3.4.0 by @Polkaverse in #264

Full Changelog: v3.3.0...v3.4.0