Various:  - implement all lll fucntions for totally real field to operate on the    exact grm-matrix (= trace_matrix)  - deal "better" with denominators in relations  - experimental support to deal with non-trivial automorphism groups  - "improve" relations_find2: fix some of the logic errors...
Various:
 - implement all lll fucntions for totally real field to operate on the
   exact grm-matrix (= trace_matrix)
 - deal "better" with denominators in relations
 - experimental support to deal with non-trivial automorphism groups
 - "improve" relations_find2: fix some of the logic errors...

thofma/Hecke.jl