Pure/thm/norm_term_skip: new, for skipping normalization of the context
Pure/thm/norm_term_skip: new, for skipping normalization of the context

Pure/thm/bicompose_aux: now computes nlift (number of lifted assumptions in
new subgoals) and avoids normalizing the first nlift assumptions in the
case where the proof state is not affected.

Pure/thm/norm_term_skip: now normalizes types of parameters

Pure/thm/THM: aligned colons

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle