Merge pull request #7 from jrjohansson/3.0-updates

3.0 updates
Merge pull request #9 from jrjohansson/3.0-updates

doc typo fixes
Merge pull request #10 from jrjohansson/3.0-updates

3.0 updates
Updated tree plot

Generate qutip.json file automatically in d3_data directory
break long code lines
Merge branch 'master' into 3.0-updates
line-break long code lines