Update folia2kaf script to use iterparse
Update folia2kaf script to use iterparse

Because some folia files could not be loaded into memory, the folia2kaf
script was updated to use lxml iterparse instead of 'normal' parsing.
For normal parsing, complete xml files are loaded into memory.
The new folia2kaf script only loads the relevant parts of the folia
files into memory (i.e., the acts of theatre texts). Now all folia files
of the 33 plays selected for annotation can be transformed to kaf
without problems.

NLeSC/embodied-emotions-scripts,NLeSC/embodied-emotions-scripts