arduino/arduino-ide 2.0.1 on GitHub

Added

Make links to Boards Manager and Library Manager clickable inside the sketch (#1442)
Message history in Serial Monitor (#1404)
Create a custom sketch template for new sketches (#1559)
Add a project contributor guide (#1419)

Changed

Can send message to the monitor with Enter (#572)
Show user fields dialog again if upload fails (#1386)
Update translation files (#1462)
Put Arduino libs on top of the Library Manager (#1541)
Changed the daemon output from json to text (#1544)
Make the "INSTALL" button always visible in Boards Manager and Library Manager (#1568)

Fixed

Occasional "Unable to watch for file changes in this large workspace" warnings (#39)
Label of unidentified port missing in "Board Selector" after opening new window (#1383)
Bring existing Serial Plotter window to foreground when selected from IDE UI (#1346)
UI unresponsive when sketch has a very long line (#1343)
Align the primary button in all dialogs in IDE (#1368)
Serial Monitor autoscroll only makes bottom line partially visible (#972)
Dialogs UI scalability - Unexpected dialog layouts (#1350)
Color contrast in the Firmware Updater dialog with the dark theme (#1441)
Sketchbook folder not created on startup (#1445)
3rd party URLs dialog should not wrap text (#1470)
Keyboard bindings do not work properly after change to different keyboard layouts (#989)
Add missing translations (#1431)
Spurious IDE update notifications when using snapshot or nightly builds (#1440)
"Check for Arduino IDE Updates" operation fails when automatic update checks are disabled (#1437)
Avoid intellisense widgets being covered by the bottom panel (#1479)
When opening a dialog, set the focus inside it (#1373)
Attempt to open deleted sketch from Sketchbook or Examples menus fails silently (#53)
Serial Plotter requires \r\n line endings (#1360)
IDE is non-functional if package index can't be loaded (#1084)
Only package indexes should updated after changing the "Additional Boards Manager URL" preference. (#1156)
Application allows setting interface scaling interface past limits (#1384)
Parts of the UI disappear when window is to small (#662 #1515)
Incorrect spacing of the horizontal rules in the editor hover (#1503)
Sort Board selection menus like as described in the platform's boards.txt configuration file (#802)
Intermittent failure to recognize ports (#573)
The style of the buttons in the library installation dialog break when the labels are too long (#1314)
Uploading disabled without port selection (#702 #770)
Opening invalid sketch via file association/command line fails silently (#964)

Thanks to everyone who's helping us improve the quality of the Arduino IDE:

Full Changelog: 2.0.0...2.0.1