gitignore .diff files
note a TODO on square package
add another todo
take frame pool management out of the hands of sinks, sources and processors and put it into the hands of each of those things' goroutines in concur file. add some tests to ensure library packages adhere to the appropriate interface while we're at it
add Size() and NumAvailable() to SampleFramePool interface
beginnings of core package testing, starting with context and the frame pool
concurrency test for a whole source to sink path
cross off some todos