First Official release of Skyflash, the tool to download, configure & flash Skybian, the Skyminer's OS.

Main features are:

Only one tool to download, configure and flash the Skyminer's OS in the form of a portable app
Same interface in the major 3 OS (Windows, Linux & Mac OS)
Just one file to download, no more 8 big .img for each uSD card
Always use the latest version of Skybian from the internet
Once you have downloaded and verified the Skybian OS the app will use it as a default, no need to re-download it (unless a new version of Skylash is detected)
Auto update warning, It check for new versions on every run and will warn you about it

Setuptools compatibility (structure and code changed)
Updated Travis .yml file for CI/CD
Developers now can create a local Docker image to generate the Windows .exe release file from a linux host
Full flashing support in Windows & Linux
New flashing paradigm in the UI, to help the user and allow for repeated flashing
Full flashing support in macos OSX
Full generation of release files via Travis
Make now can take care of dependencies in linux for the devs (see make help)
Doc update with latest changes
UI now shows the name and version of the base image being processed.
Skyflash now checks for new versions on startup, if found will warn the user and open a web browser with indications to the user...
Skyflash now detects the latest stable version of Skybian (from internet) and use that for the download... if it can detect it, just use the hardcoded one.
Added a new dependency for python3: request module, drop your local created docker image and re-create it, see make help

Structure changed to support python3 setuptools
Versioning for Skyflash will match the Skywire ones, starting with 0.0.4
README and MANUALS updated to reflect recent changes
Makefile options changed
Posix OS (Linux/OSX) now uses a own streamer app to feed dd for the flash process
Windows uses a own flasher app (flash.exe)
The docker image in the dev stage that was named "pyinstaller-win64py3:pyqt_winapi" and then renamed to pyinstaller-win64py3:skyflash please remove the old and run make deps-windows to re-create the new docker image.
We will not longer release a .deb file for installation, use the linux static app instead.
The network config now has a natural view on the IPs, no more spaces in the IPs
The internal validation mechanism for the IPs and DNS entries was rebuilt almost from scratch
Dev docker image updated, please run make deps-windows to erase your old one and to re-create the updated one
Change in Python & PyQt5 version, now we use Python v3.6 and PyQt5 v 5.13