* Update tests to include missing `token` property to a Tx of Ether or Token

* Update tests to include missing `address` property to a Tx of Ether to fixes `TypeError: Cannot read property 'address' of undefined` error

* Update tests to include missing `options` and `args` properties to the Tx so the second argument passed to `transfer$` in `contractForToken(token.address).transfer$(..., ...)` is not NaN

* Fix error `ReferenceError: regeneratorRuntime is not defined`

* Fixes `SyntaxError ... Decorators transform is necessary.` (regarding use of `@observable`)
* Fixes `Decorating class property failed. Please ensure that proposal-class-properties is enabled and set to use loose mode. To use proposal-class-properties in spec mode with decorators, wait for the next major version of decorators in stage 2.`

Fixes error: 'pipelineOperator' requires 'proposal' option whose value should be one of: 'minimal', 'smart'

Reference: https://www.electron.build/icons#windows-nsis

[Merge into luke's taskbar PR] Fix icons

* Update Readme with Usage of taskbar mode on macOS and Linux

* Remvoe custom context menu since was not working and we will use ALT version instead

* Rename processMoved to saveWindowPosition

* Fix by savingWindowPosition when user minimises Fether window so it restores to same position

* Change tooltip message to 'Click to toggle Fether window' since it is important on Linux as use must click the tooltip to open/close the Fether window

* Only disable taskbar mode on Windows

* Save Fether window position on Linux using debounce with 'move' event, and 'close' event

* Save Fether window position on macOS and Windows also using 'close' event instead of just 'moved' event

* Refactor `create` method to prevent duplication

* Refactor to organise event listeners into `setupWindowListeners` and `setupRequestListeners`

Fix sync rate not showing

fix: Fixes #383. Add an underlay to absorb a blur click away from the menu so nothing else in the UI clicked upon menu blur