Thonny

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* FIXED 573: "Highlight matching names" and "Highlight local variables" makes editor very slow
* FIXED 574: Error in outline
* FIXED 578: resizing local variable pane in debugger causes error

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* FIXED 564: In Windows "Highlight local variables" and "Higlight matching names" cause Thonny to load Jedi files

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* FIXED: Regression from 3.0.2 (incomplete code refactoring)

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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