* SSE2: BatchNorm

* Fixed batch norm in AVX configuration

* Optimized register size switch

* Attempt to pass CI

* Attempt to pass CI

* Bias op

* Element wise ops

* Support packing on x86 by default

* Fixed macro range in bias

* Use aligned read for packed data

* Update testutil.h

* Update pooling_x86.cpp

* Support wasn SIMD

* Fix emscripten compiler flags

* fix build

* more ci fix

* concat x86 pack4

* flatten x86 pack4

* more x86 pack4

* ci pass

* fix

* enable sse2 mathfun

* enable --experimental-wasm-simd

Co-authored-by: nihui <shuizhuyuanluo@126.com>
Co-authored-by: nihuini <nihuini@tencent.com>

* added fp16 weight storage version

* Small changes

* Fixed fp16 weight storage layers

* fix innerproduct

* fix loop error

* Fix windows build.

Disable fp 16 conversion when detecting int8 weights.

Implement requested changes.

* Restyled by clang-format

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* Restyled by astyle

* Update option.cpp

Set fp16 storage based on vulkan being used or not.

* added ability for storing state in lstm layer

* added avx lstm

* added arm lstm

* fix innerproduct activation location and add 4 parallel channel version

* Restyled by clang-format

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* revert arm file

* commit before switch

* implement requested changes

* Restyled by clang-format

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* More x86 optimized implementations of common layers.

Added LSTM layers for arm and x86 + a ctest to verify the layer accuracy

Added fp16 innerproduct for arm

* fix non avx build

* Add fp16 arm compiler and cpu checks. Remove statefullness from LSTM implementation.

* Fix build check for fp16 arm

* Bypass lstm_fp16 if not supported

* Build order was incorrect

* fix std::min missing in windows build

* Restyled by clang-format

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* attempting to fix gnu build by enabling: -mfp16-format=ieee to fix the missing __fp16 type

* remove double "fix"

* Specify ieee fp16 format

* implement requested changes

* fix arm non-fp16 build

* fix arm lstm

* Restyled/pull 1881 (#15)

* Restyled by clang-format

* Restyled by astyle

* Restyled by clang-format

* Restyled by astyle

Co-authored-by: Restyled.io <commits@restyled.io>

* Check blob size on arm lstm

* fix styling

Co-authored-by: Restyled.io <commits@restyled.io>