Enable selection of multiple images

[ayoubassis]

Changes:

• select multiple images by default: index arg became indices
• by default no image is selected
• image_select return list of images instead of a single image, subsequently, the list is empty when no image is selected

TODO:

• update changelog in Readme.md

fixes #1

[jrieke]

Sorry, have seen this and your email but extremely oversubscribed with work right now. I'll make a task on my todo list to look through this once the most important projects have wrapped up but no guarantees!

[AyushExel]

hi @jrieke it'd be great if this feature is added to the original package.
If not, could you please tell me how I can use this branch in my streamlit project? thanks!

[khronimo]

Hope this merge eventually gets looked at

[wjiang]

Hope that this pull request can be merged ASAP!

[PetervanLunteren]

I've forked the original repo and added the multiple image selection option under a new PyPi package st-img-picker.

https://pypi.org/project/st-img-picker/

Installation

pip install st-img-picker

Usage

import streamlit as st
from st_img_picker import img_picker

imgs = img_picker(
    "Select images", 
    ["image1.png", "image2.png", "image3.png"]
)
st.write(f"Selected {len(imgs)} images")