Set up Trees article draft
Merged master into b2b-trees-draft
Wrote introduction to trees
Rearrange and expand trees introduction
Merge branch 'master' into b2b-trees-draft
Wording change on tree explanation
Merge branch 'master' into b2b-trees-draft
Integrate new CC link into trees draft image
Merge branch 'master' into b2b-trees-draft
Added interface and partial implementation of BST
Add BST-delete implementation
Fix time complexity on BST-insert and BST-search
Fix list bottom margin being applied to b2b article list
Merge branch 'master' into b2b-trees-draft
b2b-trees: add node removal time complexity
b2b-trees: Move general tree discussion out of binary tree section
b2b-trees: Add binary tree traversal section
b2b-trees: Add full BST implementation
Add intro to RBT section
Update gems