v0.9.3: merge from dev branch (#101)

* remove tensor.h

* rm src/tensor.cpp

* new api :: consistent_variable

* update basic_flat_shape

* check bound

* fix windows build

v0.7.0: dev-0.7.0 (#81)

* new API :: device_type

* more constructors

* chebyshev_distenace

* stdc++fs

* COC

* deprecate <stdtensor>

* fix test

* support .at() for rank 0 tensor

* raw to flat

* flat_tensor::{rank,size,dims}

* simplify opencv example

* fix test for gcc

v0.6.0: dev-0.6.0 (#78)

* INSTALL

* make ttl::range less generic

* ttl::copy

* --with-cuda

* add .size() and .dims() to tensor types (#79)

* add size method to tensor

* dims()

* deprecate from_host, to_host (#80)

* support customize install prefix

v0.4.0

CUDA tensor fully supported

v0.3.0: ttl/algorithm (#30)

* init ttl/algorithm

* min/max

* fix build