This release focuses on hardening, architectural refinement, and better testing capabilities.
On the Hardening front, the ToxAV module has undergone significant security improvements. We have addressed a heap buffer overflow in RTP packet handling and fixed several logic bugs in the bandwidth controller and audio modules that could affect stability.
Architectural Refactoring continues with the internalization of core system dependencies. The system clock, random number generation, and memory management are now accessed through abstract interfaces, further decoupling the core from OS-specific implementations and making the codebase more portable and testable.
For backwards compatibility, we also `#include "tox_options.h"` in
`tox.h`, but in 0.3.0 we can break that so most toxcore client code
doesn't need the options, only the part that creates the instance.
