Minor code reorg. Move public api to the top for clarity
provide access to the current joinpoint via meld.joinpoint(), so that any advice type can use it
Minor cleanup
Closes #10. Tracing aspect and unit tests
Playing more with memoizer and cache.  Still not satisfied with the API
Close #11. Simple memoizer and slightly more configurable caching aspects
Add docs for meld.joinpoint
Rename trace aspect reporter API. Bump version numbers
Adding TOC and aspect docs
Update changelog
Add link to docs for bundled aspects