fix build: missing #include
remove useless pointers to containers

These only cause an extra level of indirection, i.e. speed loss.
remove useless uses of cat

Using cat in this way causes all input to go through a kernel buffer,
i.e. it gets copied around twice too often.
add a .gitignore
typos
get rid of useless stats vector
Merge branch 'fixes' of https://github.com/larsmans/sta

Conflicts:
	README.md