Thonny

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* FIXED 563: Problems with HeapView and EventsView
* FIXED 565: Don't replace tabs in shell

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* FIXED: Problems with executing "Run" and "Debug" commands together with "cd" command
* FIXED: Editor file name issues
* FIXED: MicroPython %cat command failed over serial

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* CHANGED: Line numbers are now visible by default
* CHANGED: Stack and Assistant views are now in the bottom-right corner
* CHANGED: Shell doesn't show full path of bundled interpreters anymore
* ENHANCEMENT 555: Internal errors are now shown with more suitable dialog
* FIXED 170: Command+k for clearing shell in Mac
* FIXED 547: Recommend "..." button when plug-ins latest stable isn't suitable for this Thonny version
* FIXED 548: Prevent inconsistent use of tabs and spaces error (when pasting or opening text containing tabs, Thonny proposes to replace them with spaces)
* FIXED 557: Default window size too small for simple mode
* FIXED 559: Make text copied to clipboard available even after closing Thonny
* FIXED: Implemented workaround for https://bugs.python.org/issue34927
* TECHNICAL: MicroPython backend now shows the source of failing internal commands

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* ENHANCEMENT: Documented several features (see Help => Help contents)
* FIXED 523: Open system shell doesn't work with pip 10
* FIXED 534: Add shortcut for step-back
* FIXED 538: Turtle programs give false warnings

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* CHANGED: In order to avoid pollution of user home directory, the configuration file and logs are now stored in directories recommended by platform style guides (%APPDATA%/Thonny on Windows, ~/Library/Thonny on Mac and ~/.config/Thonny on Linux). Old configuration and user logs will be imported on first run.
* CHANGED: "Back end" configuration page was renamed to "Interpreter" (as it was in Thonny 2.1)
* CHANGED: Python version in Thonny+Python bundles upgraded to 3.7.1rc1
* NEW: File menu received a submenu for easy opening of recent files.
* ENHANCEMENT: Add shortcut for clearing shell (Ctrl+L)
* ENHANCEMENT: Warn when script is saved with a common library module name (eg. turtle.py)
* ENHANCEMENT: Allow switching between regular and simple mode (Tools => Options => General)
* FIXED 72: "View => Full screen" (in Expert mode) is now also available on Mac
* FIXED 262: Add ability to select an autocomplete suggestion with TAB
* FIXED 316: Nice debugger doesn't handle named arguments properly
* FIXED 339: Allow disabling sound Tools => Options => General
* FIXED 389: AST marker fails with dict merge
* FIXED 478: Add option to reopen all files on start-up
* FIXED 479: Make Thonny save configuration when "Quit"-ed on Mac
* FIXED 480: Thonny now properly remembers opened files
* FIXED 498: Open System Shell doesn't work on Raspberry
* FIXED 501: Assistant feedback preview link doesn't work on mac
* FIXED 510: Error when listing available interpreters in config page
* FIXED 518: add menu item: "device" / "Upload current script" for MicroPython (by Jens Diemer)
* FIXED: Object inspector can show images (again)
* FIXED: Pylint and MyPy processes don't hang anymore with large output.

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* FIXED: requirements.txt was missing mypy