'push()' and 'pop()' can now be called within functions (#1).
flifo 0.1.4
Imports 'bazar' instead of 'base2'
The length of a NINO stack was not correct.
flifo 0.1.3
Changed 'max_height' for 'max_length'
flifo 0.1.2
Every stack now has a 'max_height' and a 'max_size' attributes.
The 'height' function gives the current number of elements,
and the 'size' function gives the size of the stack in bytes.