Correct issue in example.c
Add stubs for init and free, update example
Remove init/free files, start writing alloc.c
Implement ptab_init
Add alloc_from_block function
Implement ptab_free
Intermediate tree checkin
Add Red-black tree insert cases
Implement requires_balancing
Implement remove_block
Remove red-black tree stuff
Rename to check_bst_node and add comment
Write replace_in_parent
Remove Red-Black tree code; implement unbalanced BST
Add ptab_init unit tests
Add ptab_free unit tests
Fixed failed free_uninitialized unit test
Rename ptab_alloc_tree_s to ptab_bst_node
Remove ptab_ prefix from static functions
Calculate allocation sizes