[#103] fix broken bubble chart selection
improve filtering robustness
improve filtering robustness
[#108] only draw bars within x domain
[#108] enable bar resizing when focus changes
[#108] add ability to remember original x domain
[#108] implement rescaling of the x axis when focusing
[#108] differentiate how bar and line chart handles focus
[#108] implement simple clipping for line chart
[#108] complete clipping implementation for composite chart
fine tuned bar title setting performance
[#107] fix area chart y0 incorrectly drawn problem when y domain is not started from 0
fixed issue with rendering area in line chart after adding data
Merge branch 'master' of https://github.com/lytics/dc.js
merged pull request #110 from #slindberg
updated api.md to include utilities section and focus function
[#104] improve xunit handling
[#104] introduced float units
[#94] introduce pre/post render listeners
[#94] introduce pre/post redraw listeners