Unreleased:
  Tracing service and probes:
    *
  Trace Processor:
    * Local Symbolizer allows to use PERFETTO_SYMBOLIZER_MODE=index to
      discover symbol files by build id rather than name.
  UI:
    *


v5.0 - 2020-07-01:
  Tracing service and probes:
    * Added gpu_mem_total ftrace event.
    * Added TrustZone (scm start/end) event.
    * Added protos for GPU memory tracking and updated render stages proto.
    * Added time_in_state probe for Android (CPU time broken down by frequency).

  Trace Processor:
    * Added ingestion of IRQ and SoftIRQ events.
    * Added ingestion of workqueue events. KAddr symbolization still missing.
    * Added ingestion of voltage regulators and board clock change events.
    * Added ingestion of new ION ion_buffer_create/destroy events.
    * Added ingestion of TrustZone (scm start/end) events.
    * Added SurfaceFlinger derived events (tracking of missed frames).
    * Changed parsing of scheduler task state on 4.14 kernels.
    * Changed importing of Java heap graphs: allow partial dumps.
    * Improved performance of the SQL query engine.

  UI:
    * Added dedicated query page for custom SQL queries.
    * Added navigation links for Binder slices.
    * Removed overview summary mode when zoomed out.
    * Fixed recording page when targeting Android P.
    * Improved slice pan/zoom performance by quantizing.