* discard weight memory for x86 and vulkan
* drop arm innerproduct weight
* drop arm convolution weight
* drop arm convolutiondepthwise weight
* drop x86 vulkan deconvolution deconvolutiondepthwise weight
* drop arm deconvolution deconvolutiondepthwise weight
* arm neon assembly optimization for innerproduct pack4

* quantize and dequantize tests

* unify activation and usability function

* drop NCNN_REQUANT cmake option, test dequantize requantize pack8, fix webassembly build

* benchmark use requantize int8 model

* cpu test

* wip

* ci run test

* travis ci for arm64

* arm64 ctest

* copy vulkan loader

* wip

* run

* Update ccpp.yml

* gpu test

* swiftshader

* cache macos swiftshader

* try MoltenVK

* try vulkaninfo

* give swiftshader another try

* disable failed macos gpu test

* more conv test, fix conv3x3s1 gpu test fail

* fix deconvolution test

* dilation test

* cmake option to build tests

* ncnn_add_layer_test macro

* host barrier before upload and after download, handle packing layout option

* test packing layout

* wip

* wip

* merge deconvolution packing and non-packing code

* merge convolution packing and non-packing code

* pass top_blob_count param

* fix build

* take care of non-coherent mappable memory