Fixed C-style variadic arguments for LLVM 19

Updated insight makefile

Updated copyright year

Added condition-less blocks

Added WinMain entry test

Merge branch 'master' of https://github.com/IsaacShelton/Adept

Merge branch 'master' of https://github.com/IsaacShelton/Adept

Partial changes towards "using namespace" solution. Planning to abondon.

Preparing for Adept 2.4 Release

A new version of Adept has been released!

Major Features:
- `__defer__` function auto-generation
- `__pass__` function auto-generation
- `verbatim` keyword to disable auto-generation inside special functions
- Toggle `!!` operator
- Improved runtime null checking when using `--null-checks` / `pragma
null_checks`
- Added `fallthrough` keyword
- Added `repeat static` and `each-in static` loops
- Added support for default arguments
- Added many features to help with compatibility on linux systems
- Added #get meta directive
- Added support for scientific notation
- Added bitwise assignment operators
- Implemented `offsets` in `AnyStructType`
- Added #print_warning and #place_warning
- And more!

Adept 2.3 also supports backwards-compatibility with most programs
written in Adept 2.0 through Adept 2.2.