fix: idNormalize for matrix
chg: instantiate more templates for NTL 6.0.0
fix: typo
Merge pull request #340 from mmklee/templates

Templates for NTL6
removed unneeded templates (already in factory)
fix: do not set minpoly to 0 (in poly.lib)
fix: div for int division
fix: memory leak in intvec::String
fix: more memory leaks (analogue intvec::String)
chg: update grobcov.lib