- Fix the tarball fetching

- disable python2 as build dependency pyside is only available on python3
- update to version 2.8:
- Fix tooltip giant rectangle #174
- Fix QTextEdit wihout borders inside frame #188
- Fix PyQt5 issuies on dropbown #191
- Fix combo box with icons #169
- Fix QToolbBar vertical handle #210
- Fix pane tab labelcropped on activation #199
- Enhance vertical/horiontal lines #184
- Enhance tool button size and spacing #181, #183, #202
- Enhance buttons and inputs with focus, blue border #194, #211
- Enhance QSplitter #207
- Removed QStatusBar vertical lines #205
- update to version 2.7:
- Remove utils from import in qdarkstyle, #170
- Fix border colors in tool button #176
- Fix scroll area and stacked with 2px padding, #159
- Fix backgroung submenu color, #179
- Fix extra border aside header's arrow indicator, #180
- Fix menu right arrrow indicator
- Fix slide bars colors, #150
- Fix QLabels problems, #163, #139
- Fix problems with example settings using PySide2 and --no\_dark #167
- Provide SVG files for all images, standard names and sizes, fix images, #149
- Improve images and add high resolution images, #140
- Improve docs
- Add check to scripts for generating images, #137
- Fix tox and travis scripts #76