v3.20.8

moving the graffiti in erase at even level

v3.20.7

using library pcre when it is installed

v3.20.6

fixing the processing of graffiti for nested surfaces

v3.20.5

making the graffity order independent

v3.20.4

further fixing the processing of graffiti for nested surfaces and bea…

v3.20.3

fixing the processing of graffiti (obs from Patrick Hochstenbach)

v3.20.2

fixing --pass-only-new for --n3p-output

v3.20.1

fixing --n3p-output for variable predicates

v3.20.0

adding backward blogic queries and adding --n3p-output switch to have…

v3.19.0

improving the way to deal with backward rules in blogic