A list of handy single-file headers with typedefs.

- <xall.h> : all of the types listed below
- <xint.h> : integer typedefs; includes signed and unsigned types, i64, u64, i32, u32...
    You can also specify what integer types you want, by defining `XINT_FAST` for *int_fast*_t types, or `XINT_LEAST` for *int_least*_t types.
    You can also just not do either and have default *int*_t types.
- <xfloat.h> : float typedefs; includes f32 (float), f64 (double), f128 (long double)
- <xvec.h> : vector typedefs; includes vec3, vec4 and their integer and unsigned variations. read comments for more info
- <xmat.h> : matrix typedefs; includes mat3x3, mat4x4 and basic functions to work with them. read comments for more info