android ios macos linux windows webassembly 预编译库 20210525 f6c4952

编译版本，默认配置，android-ndk-r21d，xcode 12.2，ubuntu-16.04，ubuntu-18.04，ubuntu-20.04，vs2015, vs2017，vs2019, emscripten-2.0.8

file	content	arch
ncnn-full-source.zip	包含全部 submodule 代码的完整源码
ncnn-android.zip	android 静态库/动态库	armeabi-v7a + arm64-v8a + x86 + x86_64
ncnn-android-vulkan.zip	android 静态库/动态库，支持 GPU	armeabi-v7a + arm64-v8a + x86 + x86_64
ncnn-ios.zip	ios 静态库，with and w/o bitcode	armv7 + arm64 + arm64e + i386 + x86_64
ncnn-ios-vulkan.zip	ios 静态库，支持 GPU，with and w/o bitcode	arm64 + arm64e + x86_64
ncnn-macos.zip	macos 静态库	x86_64 + arm64
ncnn-macos-vulkan.zip	macos 静态库，支持 GPU	x86_64 + arm64
ncnn-ubuntu.zip	ubuntu linux 静态库/动态库，支持 GPU，模型转换工具	x86_64
ncnn-windows.zip	windows 静态库/动态库，支持 GPU，模型转换工具	x86 + x86_64
ncnn-webassembly.zip	webassembly 静态库	wasm32 + simd + threads + simd-threads

绘图api，画框，画圆，画线，画字
simpleocv添加stb_image读写图片文件
运行时检测armv8.2 dotprod
未找到opencv时依然能编译量化工具
允许超过gpu硬件队列数限制并行提交任务
ncnnoptimize自动生成随机bin文件
修复convolutiondepthwise int8经过ncnnoptimize后权重错位问题
extract int8数据自动转换为fp32
添加获取模型输入输出blob接口(caishanli)
发布python预编译包(caishanli)
更新imx7d benchmark
risc-v v 优化数学函数
运行时检测 risc-v vlen
mlir2ncnn合并swish
benchmark添加efficientnetv2_b0
修正jetson cmake工具链错误定义android宏的问题
修正macos/ios glslang framework打包问题
webassembly预编译包启用simpleocv
添加scrfd人脸检测例子
添加scrfd人脸检测截图(ZHEQIUSHUI)
更新FAQ(deepage)
修正拼写错误(FusionBolt)
添加下载数badge

New Contributors

• @FusionBolt made their first contribution in #2922
• @ZHEQIUSHUI made their first contribution in #2925

Full Changelog: 2021050...2021052