Broken with latest version

[JairusSW]

Just run the example on the readme with the latest version of AssemblyScript and you get this:

$ astral
Compiling assembly/__benches__/tbs.ts
ERROR AS220: Expression must be a compile-time constant.
     :
 192 │ export const baselineIters = memory.data(__astral__sampleSize * sizeof<f64>());
     │                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     └─ in ~lib/__astral__.ts(192,42)

ERROR AS220: Expression must be a compile-time constant.
     :
 193 │ export const baselineTimes = memory.data(__astral__sampleSize * sizeof<f64>());
     │                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     └─ in ~lib/__astral__.ts(193,42)

ERROR TS2322: Type '~lib/string/String' is not assignable to type 'u32'.
   :
 5 │ bench("string split", () => {
   │       ~~~~~~~~~~~~~~
   └─ in assembly/__benches__/tbs.ts(5,7)

FAILURE 3 compile error(s)

[romdotdog]

At first glance, this seems to be the effect of a breaking change in the compiler, accidental or not, but I will look into it.

[romdotdog]

Indeed, this bug was created as a result of AssemblyScript/assemblyscript#2501. I fixed this bug in the new version, which is a major release.