v2.4.0

Thank you @sotanodroid, @tianjipeng, @kiyonlin, @ReneWerner87, @hi019, @xenowits, @mlukasik-dev, @hinoguma, @hitalos, @yquansah, @bestgopher, @sacsand, @sujit-baniya, @Tazeg for making this update possible.

🔥 New

• Add new variables to logger middleware #1132
• Support stack traces for recover middleware #1131
• Add Next option in Static #1130
• Add custom error function for csrf middleware #1129
• Add total ram to monitor middleware (beta) #1125
• Add support for custom JSON encoder #1121

🧹 Updates

• Adjust lines according to go-lint #1137
• Accelerate startup process for many routes #1134

🩹 Fixes

• Fix Next position in cache middleware #1135
• Fix timing attack in basicauth middleware #1113