Thank you for the great effort, you are putting into this project :) There is, however, a feature I miss; rotated bounding boxes. Especially when objects are thin and diagonal, an ordinary bounding box fits poorly. Examples of such cases are shown here: rotated bounding boxes

A way annotation could be

Enhancement description

I have these errors in log on each start:

backend_1   | Initializing database
backend_1   | Operations to perform:
backend_1   |   Apply all migrations: admin, api, auth, authtoken, contenttypes, sessions, social_django
backend_1   | Running migrations:
backend_1   |   No migrations to apply.
backend_1   |   Your models have changes that are not y

Create text classification project that shows text to the annotator. The text also includes URLs or terms that the annotator may want to look up.
However normal copying the string to look up is not possible, presumably because the code that normally handles text selection in order create a sequence annotation (like for NER) is active.
"Normal copying" would be that the user marks the text to

Describe the bug
Project settings -> tags, are not saved unless user hits 'Enter' after typing new tag.

To Reproduce
Steps to reproduce the behavior:

1. In project settings, add new tag.
2. Click 'Save Project'.
3. Exit project settings pane and return.
4. New tag is not saved.

Expected behavior
Tag should be saved when clicking 'Save Project'.

Screenshots
If a

We have a lot of repetitive instances in our data and it a simple Copy/Cut - Paste (Ctrl+C/X and Ctrl+V) function for bounding boxes would help speed up labelling by a lot!

Edit: Also multi-selection of multiple boxes/geometries would be great for a faster workflow

In order to make contribution more clear I suggest a similar aproach:

https://github.com/facebook/draft-js/blob/a9316a723f9e918afde44dea68b5f9f39b7d9b00/CONTRIBUTING.md

Also for more clear Issue templating I recommand : https://github.com/GRAAL-Research/poutyne/tree/master/.github/ISSUE_TEMPLATE

I wanted to propose a PR but some point where not clear (linter, yapf).

Is your feature request related to a problem? Please describe.
Having a shortcut to move around the images would be a big usability improvement given that the toolbar moves depending on the image resolution. Also it speed ups annotations

Describe the solution you'd like
Just add a shortcut for next/prev images (arrow keys?)

Is your feature request related to a problem? Please describe.
When annotating in 3.6.2, clicking Next to move to the next document doesn't remind the user to Finish the document. New annotators do not expect this additional manual step is needed, partially because the Finish button is so far away from the Next button. We end up with a long list of unFinished docs.

**Describe the solution

Describe the bug
Open document dialog is shown after export fails

To Reproduce
Steps to reproduce the behavior:

1. Create a document with content 第四卷第一四二八页。 　�
   2, Try to export it
2. See that it opens the Open document dialog

Expected behavior
It exports or shows an error

Screenshots

Video

Have an example for Edit/Delete annotations

It would be neat if the workflow for creating custom content would be easier (wrapper components, etc)

I find your tool very useful, however when annotating objects close to image edges, it is very easy to drag the bbox outside of the image. Adding a small feature to keep the bbox within the image would be appreciated.

This is a collection of smaller GUI and UX things:

1. Making User & Sys response boxes bigger (resizable)
2. Improving File Naming Style
3. Improving css in general.

Summary

Currently, the FLAT can be configured to limit the number of sentences/paragraphs loaded at once. If a document is longer than the limit, it is sliced into multiple pages which can be navigated via the page dropdown on the top-left of the editor view.

Problem

The page is too small and the total number of pages are not displayed anywhere. So, after the first page is annota