Fix issue when floating point numbers are present in batch

[pbashyal-nmdp]

Correctly marks as a failure for invalid serology.

Using config file: conf.json
Column:R_A_TYP1 =>
	A*02:01 => A*02:01
Column:R_A_TYP2 =>
	A*02:01 => A*02:01
Column:R_B_TYP1 =>
	B*13:02 => B*13:02
Column:R_B_TYP2 =>
	B*50:01:00 => B*50:01
Column:R_C_TYP1 =>
	C*06:02 => C*06:02
Column:R_C_TYP2 =>
	C*06:02 => C*06:02
Column:R_DRB1_TYP1 =>
	DRB1*07:01 => DRB1*07:01
Column:R_DRB1_TYP2 =>
	DRB1*13:01 => DRB1*13:01
Column:R_DQB1_TYP1 =>
	DQB1*02:02 => DQB1*02:01
Column:R_DQB1_TYP2 =>
Failed reducing '0.478472222' in column R_DQB1_TYP2
Summary
-------
1 alleles failed to reduce.
| Column  Name    |      Allele      |      Did you mean ?       
| --------------- | ---------------- | ------------------------- 
| R_DQB1_TYP2     | 0.478472222      | NA 
Saved result to file:data/test.gl.csv.gz

Fixes #339