+ fix makefile to compute dependency info as a side-effect of compilation (-MF)
- investigate 16 byte CAS; ht can store GUIDs inline instead of pointers to actual keys
- testing, testing, testing
-- support integer keys for ht
++ support integer keys for ht
- validate arguments to interface functions
+ optimize tracing code, still too much overhead
+ use NULL instead of a sentinal node in skiplist and list
- iterators
- characterize performance of data structures
- experiment with the performance impact of not passing the hash between functions
-- experiment with embedding key is the list/skiplist nodes
+- experiment with embedding keys in the list/skiplist nodes