SebastianBocquet/pygtc: Big update to 0.2.0

Version 0.2.0 updates: Option to turn off tick label rotation Long tick labels are now lined up correctly with their ticks Option to fine tune position of label relative to tick Can choose to use 1d or 2d Gaussian sigma contours scipy is now an optional dependency Can choose to fill contours and 1d histograms independently Can plot the actual data-point density underneath the contours Full control over fonts for labels, ticks, and legend Use built-in matplotlib LaTex renderer for equations in labels so no LaTex installation is required locally. Added a new example to the documentatio