Remove trailing newline from Trie string representation

Replace string implementation with __str__

rename trie to _trie and fix print doctest

Refactor test cases and fix bug in print

Add length function and test cases

Add additional test cases and support for empty string

remove main function of trie.py

Remove builtins import

Remove unnecessary edge case logic

Specify type before the __init__

Add stop character to ensure only words added are found in search

Move trie into trees

first

[bot] Update README coverage badge.

Changed cloning https.