add initial list_lab.py doing simple list manipulation and input
add series2 with index error, fix series1 int conversion bug
build new list for series2 to avoid index errors as items are deleted
rename series2 to series3, add series2 and series2a
add series4, correct docstrings
take user input, apply rot13, display output
create ROT13 without string encode method
Merge pull request #26 from CharlesGust/listlab

Merging in assignments