Version 1.12

- fix SIGSEGV in humanize_val on large values
- convert the pseudo-graph to a normal column
- remove option -s (replaced by -8 with inverse logic)
- add sort by the pseudo-graph column
- make sort by the pseudo-graph the default
- implement hiding columns by options and shortcuts 1...9
- revise column widths
- rewrite curses event loop to make data collection separate from refresh
- fix sorting (proper double value comparison)