FramesToString converts a `Frames` object to a newline-separated list of frame strings.

FrameToString converts a stack frame to a string, in the format `<function> (<file>:<line>)`.

FreeOSMemory runs a GC and then tries to relinquish as much memory back to the OS as possible.

GetLazyStacktrace returns a lazy stacktrace, skipping the given number of frames.

LazyStacktrace is a stack trace that is cheap to construct, and will resolve frames to source/function information on demand.