- 'push()' and 'pop()' can now be called within functions (#1).
- Imports 'bazar' instead of 'base2'
- The length of a NINO stack was not correct.
- Changed 'max_height' for 'max_length'
- 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.
- Now the print method works for NINO stacks.
- The README.md file is updated.
- Creation of the package 'flifo'