Imseqvis

This release includes minor bug fixes and usability improvements, including:
* Support copying image/filename/frame index to clipboard
* Reuses a potentially existing Qt application instance to support multiple subsequent invocations within the same app context
* Add fallback icon path (only for Ubuntu)
* Clarifies how to switch between Qt and PySide
* Upgrades the internal publishing workflows (updated GitHub actions)

Full Changelog: https://github.com/snototter/imseqvis/compare/v0.2.5...v0.2.8

Fixes the Qt5 compatibility issue introduced in `v0.2.4`. `imseqvis` now works again on both Qt5 and Qt6 versions.

Adds wrapper utilities to simplify usage:
python
import imseqvis
imseqvis.show_folder('path/to/folder')
imseqvis.show_sequence(sequence)

or, alternatively:
imseqvis.show(folder_or_sequence)


The standalone viewer in these wrappers also provides keyboard shortcuts to adjust the zoom levels.

* Provides a zoom- and scrollable viewer and GUI controls to visualize an image sequence.
* Allows alternative Qt backends.
* Can be used as a standalone application or as a widget within existing Qt-based applications.
* Publish to PyPI via Trusted Publishing