v2.6

### Release Notes

The 2.6 release fixes a few minor issues from the RC 1 pre-release, and updates most translations.

See the website for complete [Release Notes](https://novelwriter.io/releases/release_2_6.html).

### Detailed Changelog

**Bugfixes**

* Fixed a bug in the novel selector dropdown used a few places that would clear the selection if the novel list was refreshed. PR #2179.
* Fixed a bug that would crash the app if the project tree was clicked without any project having been loaded. The selection model does not exist prior to a project load. Issue #2173. PR #2181.
* Replaced a broken link on the dictionary install tool available on Windows. PR #2189.
* Backported a few code fixes from 2.7 related to freeing memory from closed dialogs and one instance of a potentially uninitialised variable. PR #2202.
* Fixed word wrapping in the item details panel for status and importance labels with very long names. PR #2202.
* Fixed the project tree context menu so that it is not opened when right-clicking on an empty area of the tree widget. PR #2202.

**Improvements**

* Chapter headings are now level 1 headings in all manuscript output formats, not just HTML like before. Most applications that post-processes output will assume chapters are level 1. Correspondingly, scenes are now level 2 and sections are level 3. Notes headings remain unchanged. Issue #2205. PR #2206.

**Internationalisation**

* German, US English, Italian, Japanese, Norwegian and Polish have been updated in full. Brazilian Portuguese and Chinese have been partially updated. PR #2207.

**Documentation**

* Documentation has been updated with 2.6 features. PR #2210.