v0.2.0

Release notes

Added

• sys-setup command which will install system-wide dependencies to the host
  machine.
• Global --echo flag which echoes every shell command before executing it.
• update toolchain command - Command will download and install appropriate
  version of toolchain based on the detected NCS version. If NCS version is
  currently not supported it throws an error.

Changed

• Structure of the commands. Commands are now split into two groups: workspace
  commands and system commands. This is reflected in the project directory
  structure and help texts.
• Workspace commands will now use downloaded toolchain whenever they can.