Suggestions

[mdkeehan]

I tried to track down why the Unit Tests for XSim were failing and ended up looking quite closely at some parts of JWAS on the way. I have made a few suggestions which I have included as a pull request. The only testing I have done is the JWAS unit tests and running under Julia 1.6.3.

1. The worst error was that mme.Lhs eventually became a Sparsevector of {Any} which does not have an associated zero() function.
2. A deprecation warning was fixed
3. genotypes were simplified to be read as Float32 to which they were eventually converted.

[reworkhow]

Hi Mike, this is great! I will look into your pull request and merge it this week.

[mdkeehan]

Hi Hao,

I have thought about this some more. The third commit 78c5faf is a large style change and interacts with commit da6d2ee. Parts of 78c5faf may be redundant once da6d2ee has gone in.
Happy to see what you think and I hope they are useful!

Mike