v0.3.0

BugFix

• Added wsl --update before wsl --set-default-version 2 (Close #4)

Changes

• prepare_win_components.ps1: added check that is running as administrator (Close #5)
• Added check for the existence of a parent path for the -InstallPath path in install_linux_wsl.ps1 (Close #7)

Docs

• Added info in docs about Windows Execution Policy (Close #6)
• Changed examples pictures

Refactoring

• install_linux_wsl.ps1 execution log is designed a little more beautifully