optimize default insert_sorted implementation

add stupid default implementation for high level insertion sort

add default impl for some list member functions

fix inserting via iterator correctly increases element count

close feature branch feature/tree_add

merge feature/tree_add branch

rework cx_tree_add() API to allow insertion of edge nodes feature/tree_add

(0) -300 -100 -30 -10 -7 +7 +10 +30 +100 tip

mercurial