v0.41.0-beta release

Trilium 0.41 contains massive frontend refactoring (in total 300 commits) - previously mostly spaghetti frontend has been "componentized". This is internal refactoring and end-user experience is mostly the same as in 0.40.

Given the massive amount of internal changes this release is expected to contain a lot of bugs and is not recommended for daily use. However, you are encouraged to test it and report bugs. 0.41.X is fully compatible with the latest 0.40.6+ and it is possible to switch between both on the same document.

Besides refactoring, a bunch of minor things have been improved, some of them are:

• PDF notes now show preview of the PDF (#292)
• history navigation has been improved and provides visual feedback for when back & forward actions are available, plus context menu with complete history
• spellcheck now uses native electron spellchecking which brings the possibility of adding a word to the system dictionary (#923)
• reference links are now implemented and used by default - such links differ from ordinary hyper links by the fact that their title/label always contains up-to-date name of the note (closes #905)
• import / export now uses ZIP by default, TAR stays supported for import (for certain period of time). Problem with tar was unicode support in non-unix platforms (closes #918)
• Trilium now parses pasted HTML content and images referenced by URL are downloaded locally so they are available also offline (closes #765)
• integrated editing component (CKEditor) has some nice upgrades, especially regarding more advanced table support
• display of link map is more robust (previously it sometimes randomly did not appear correctly)
• it's now possible to see recent changes for a subtree (tree context menu -> advanced -> recent changes)
• it is now possible to collapse also left side pane