Update MANIFEST
Fix up $VERSION handling so PAUSE indexer is happy. Bump version.
Report "Unknown SV type" as "Freed" if SvTYPE==SVTYPEMASK
Fix S & E token output for systems where NV is long double.
Bump version to 0.19
fix writing buffered_edges, plus minor tweaks elsewhere
Note that it doesn't currently work on use64bitint perl config