Encoding speed

---------------------------------------------
ChunkyPNG (0.10.0) encoding benchmark (n=10)
---------------------------------------------

Autodetect (indexed)   0.860000   0.000000   0.860000 (  0.856220)
:no_compression        0.490000   0.000000   0.490000 (  0.488724)
:fast_rgba             0.140000   0.000000   0.140000 (  0.143066)
:fast_rgb              0.140000   0.000000   0.140000 (  0.143170)
:good_compression      0.470000   0.010000   0.480000 (  0.476883)
:best_compression      1.880000   0.000000   1.880000 (  1.877189)
to RGBA pixelstream    0.120000   0.000000   0.120000 (  0.120289)
to RGB pixelstream     0.130000   0.000000   0.130000 (  0.131464)
----------------------------------------------- total: 8.970000sec

File sizes

pixelstream_reference.png: 240x180 - 3713 colors
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<default>         :    24050 bytes in 0.1600s
:no_compression   :   129858 bytes in 0.0391s
:fast_rgba        :    26619 bytes in 0.0143s
:fast_rgb         :    24027 bytes in 0.0139s
:good_compression :    23713 bytes in 0.0479s
:best_compression :    21224 bytes in 0.4730s

operations.png: 16x16 - 256 colors
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<default>         :      129 bytes in 0.0018s
:no_compression   :      852 bytes in 0.0006s
:fast_rgba        :      343 bytes in 0.0002s
:fast_rgb         :      462 bytes in 0.0002s
:good_compression :      462 bytes in 0.0007s
:best_compression :       85 bytes in 0.0031s

gray_10x10.png: 10x10 - 1 colors
------------------------------------------------
<default>         :       74 bytes in 0.0003s
:no_compression   :      178 bytes in 0.0002s
:fast_rgba        :       85 bytes in 0.0001s
:fast_rgb         :       75 bytes in 0.0001s
:good_compression :       71 bytes in 0.0003s
:best_compression :       73 bytes in 0.0005s

clock_stubbed.png: 80x40 - 55 colors
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<default>         :     1055 bytes in 0.0081s
:no_compression   :     3485 bytes in 0.0072s
:fast_rgba        :     1176 bytes in 0.0017s
:fast_rgb         :     1116 bytes in 0.0016s
:good_compression :      723 bytes in 0.0069s
:best_compression :      999 bytes in 0.0171s