Good looking plots

[v0dro]

In pursuit of better architecture I'm ditching good looks of the plots. Following are the things that strike me as needing change:

• [ ] Show non-overlapping X ticks.
• [x] X and Y axis should be of equal length.
• [x] Plot should not exceed X and Y axis.
• [ ] Allow rotating the ticks if they might overlap.
• [ ] Make axes intersect at the origin and put '0'.
• [ ] Draw arrows at the either of each axis.