format file using prettier for .yml files

fix "CUefp" error in CU symbol

test plot funciton and add type hint for functions

docs(images/akshare.png): update images/AkShare.png

update currency interface mindmap to image/AkShare.png

feat(currency module): add currency module and update docs

add currency: currency_convert, currenty_currencies, currency_history, currency_latest,
currency_time_series interface and docs

improvement(file name): perfect commit

support perfect commmit

remove ci

0.4.27: test: automate test

0.4.26: fix: bond_spot_quote and docs

0.4.25: fix: upload setup.py file and set automate release and deploy

update README.md and get_us_stock_name

Signed-off-by: jindaxiang <jindaxiang@163.com>

update README.md

Signed-off-by: jindaxiang <jindaxiang@163.com>

Update issue templates

Create CONTRIBUTING.md

Create CODE_OF_CONDUCT.md

Create develop branch

Signed-off-by: jindaxiang <jindaxiang@163.com>

Add akshare_test.yml

Add a update LICENSE to 2020