`ti.getanalysisunitbyid` fix applied.  Returns double precision. Issue #8 indicated that depth and thickness were being returned as  integers.  This was a result of the typecast to `numeric` apparently.   Keeping the type as a double precision (float).
`ti.getanalysisunitbyid` fix applied.  Returns double precision.
Issue #8 indicated that depth and thickness were being returned as 
integers.  This was a result of the typecast to `numeric` apparently.  
Keeping the type as a double precision (float).

NeotomaDB/Neotoma_SQL,NeotomaDB/Neotoma_SQL,NeotomaDB/Neotoma_SQL