Optimize mod5 diffusion

[jylee-bcm]

This work is main branch version for one of optimization works done in nextflow branch.
It reduces the running time of 5 minutes for demo.vcf.gz on elpaso server, this running time may differ by your machine.
For more details, please refer the link to hyunhwan-bcm#9

• Applied scalar multiplication to vector, not on matrix
• Used indexing technique
• Transformed from float64 to float32

Changed Output

There's subtle change on outputs, but I think they are ignorable.

>>> pd.testing.assert_series_equal(a["diffuse_Phrank_STRING"], b["diffuse_Phrank_STRING"])
Series values are different (0.04513 %)

[hyunhwan-bcm]

👍