Volumes should be bold

[mlhetland]

Unless I'm mistaken, per LNCS style, volume numbers should be bold (and don't currently seem to be)? For now, I corrected the issue by adding

\DeclareFieldFormat[article]{volume}{\textbf{#1}}

to my document, though I suspect the correct way of doing it may be a bit subtler.

[koppor]

Maybe, it is a good idea to check out the updated fork https://github.com/mgttlinger/biblatex-lncs