AVI output
Filters hqdn3d pad vflip yadif patch
Separate I/P/B qpmin/qpmax parameters
Add an option to specify lavf decoder
Cosmetics: cli log info
Auto keyint

When --keyint is negative value or "auto", keyint_max is set to fps * 10 automatically.
Add sar to x264 SEI info header
Improve compability with AviSynth+
Set thread execution state

prevent Windows from falling into standby
Set console screen buffer size
Improve HRD conformance
lto & Ofast
Improve 2-pass VBV

Should now apply VBV underflow logic to B-frames too, which may fix some
instances of VBV misprediction.
wip: Support ABR reconfiguration
Add autotools-style silent build rules
K-means weightp