Merge pull request #122 from EwoutH/imgbot

[ImgBot] Optimize images
diff --git a/contrib/previewers/win/preview.png b/contrib/previewers/win/preview.png
index 19836cf..9513b8b 100644
--- a/contrib/previewers/win/preview.png
+++ b/contrib/previewers/win/preview.png
Binary files differ
diff --git a/contrib/single_file_transcoder/examples/testcard.png b/contrib/single_file_transcoder/examples/testcard.png
old mode 100755
new mode 100644
index 43088bb..1f048e6
--- a/contrib/single_file_transcoder/examples/testcard.png
+++ b/contrib/single_file_transcoder/examples/testcard.png
Binary files differ
diff --git a/encoder_lvl_vs_perf.png b/encoder_lvl_vs_perf.png
index fa930a6..032feae 100644
--- a/encoder_lvl_vs_perf.png
+++ b/encoder_lvl_vs_perf.png
Binary files differ
diff --git a/webgl/gltf/preview.png b/webgl/gltf/preview.png
index 8bd83e0..238067e 100644
--- a/webgl/gltf/preview.png
+++ b/webgl/gltf/preview.png
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diff --git a/webgl/texture/preview.png b/webgl/texture/preview.png
index 574d6d8..1107e61 100644
--- a/webgl/texture/preview.png
+++ b/webgl/texture/preview.png
Binary files differ