Optimization: read population data only if needed?

[alhom]

Here's a bunch of reads happening that might not be needed:

analysator/pyVlsv/vlsvreader.py

Line 282 in 16b388f

if self.read_parameter("vxblocks_ini") is not None:

Perhaps a general solution could be to read parameters from a cached version of the XML footer instead? But that'd require moving the metadata to be actually in the footer, not in the offsets. Bleh.

[ykempf]

up

[ykempf]

reup

[ykempf]

upagain