v0.12.4

What's Changed

• Add StdFill by @PraneethJain in #147
• Fix for JuliaInterop/CxxWrap.jl#419 by @barche in #148
• Add support for dynamic casting in Julia by @barche in #152
• Make range support conditional by @barche in #153
• feat: StdSet by @PraneethJain in #154
• feat: StdMultiset by @PraneethJain in #155
• Fix static inheritance problem by @barche in #157

Full Changelog: v0.12.2...v0.12.4