Typedefs have been added for consistency reasons. For example, now you would
write `rb_dictionary *foo` and `RB_DICTIONARY_FOREACH`.
- C99 bools have been added. Don't use ints as simple true/false flags anymore.
- Don't use `YES`/`NO` or `TRUE`/`FALSE` macros (`TRUE`/`FALSE` has been removed
- and `YES`/`NO` is awaiting the same fate). Use just `true` and `false`.
+ Accordingly, the `YES`/`NO` and `TRUE`/`FALSE` macros have been removed.
- libratbox has been renamed to librb, as we have diverged from upstream long
ago.
- Almost all 2.8-style hashtable structures have been moved to dictionaries or