linked list magic node defines
data structs: basics
data structs: updated main DSs
data structs: valgrind's memleak DS
Valgrind useful internals docs
data structs: updated, listed and detailed valgrind error DSs
data structs: updated valgrind error DSs
data structs: fixed compiling issues
meta stack API: files
meta stack API: push
meta stack API: del
meta stack API: pop
meta stack API: erase