Add CHANGELOG for 1.3.7

[philippjfr]

This patch release focuses on a number of fixes and minor enhancements for the chat components and various other smaller improvements and fixes including docs improvements. In particular we want to highlight the new Ploomber deployment guide contributed by @neelash23. Next we want to welcome @jz314, @fayssalelmofatiche and @neelasha23 as new contributors and welcome back @SultanOrazbayev as a returning contributor. Lastly we want to thank the core contributor team, including @MarcSkovMadsen, @ahuang11, @maximlt, @hoxbro and @philippjfr for their continued efforts maintaining Panel.

Enhancements

• Add filter_by to ChatMessage.serialize (#6090)
• Support using an SVG for ToggleIcon (#6127)
• Add resizable param to TextAreaInput (#6126)
• Improve date and datetime picker functionality (#6152)
• Add activity indicator to ChatMessage (#6153)
• Lazily import bleach HTML sanitizer (#6179)

Bug fixes

• Fix alignment issues in chat components (#6104, #6135)
• Fix generator placeholder and optimize updates in Chat components (#6105)
• Fix issue with callback future handling on Chat components (#6120)
• Fix bug in Chat interfaces related to pn.state.browser_info (#6122)
• Allow instantiating empty Matplotlib pane (#6128)
• Ensure icon displays inline with text on FileDownload (#6133)
• Fix styling of links in Tabulator fast theme (#6146)
• Fix passing of card_params on ChatFeed (#6154)
• Handle Tabulator.title_formatter if is type dict (#6166)
• Fix per_session caching (#6169)
• Correctly reshape nd-arrays in Plotly pane (#6174)
• Handle NaT values on Perspective pane (#6176)
• Do not rerender output if ReplacementPane object identity is unchanged (#6183)
• Tabulator: fix valuesLookup set up for older list-like editors (#6192)
• Fix pyodide loading message styling issues (#6194)
• More complete patch for the TextEditor to support being rendered in the Shadow DOM (#6222)
• Fix race conditions when instantiating Comm in Jupyter causing notifications to break (#6229)

Compatibility & Security

• Upgrade Plotly.js to 2.25.3 to address CVE-2023-46308 (#6230)

Documentation

• Add Design and Theme explanation documentation (#4741)
• Fix pyodide execution in documentation
• Fix wrong and broken link (#5988, #6132)
• Use GoatCounter for website analytics (#6117)
• Add Dask How to guide (#4234)
• Fix Material template notebook .show() call (#6137)
• Add missing item in docstring (#6167)
• Ploomber Cloud deployment documentation (#6182)
• Correct duplicate wording (#6188)
• Update JupyterLite Altair example to latest API (#6226)