removed --pylab inline from ipython tour
updated Ch1 with matplotlib inline and explicit import
add issues doc
testing out some formatting in issues.md
do i have to end the code block explicitly
edited ch2 to include matplotlib inline and explicitly define plt
updated ch3 to include matplotlib inline and explicitly import pyplot and numpy
ch4 updated with matplotlib inline and pyplot explicitly imported
added matplotlib inline and explicit imports to ch5, 6, 7
fixed nan bug in ch 7 is_far
removed issues file
Add note about the warning to Chapter 2
Add explanation that the summary behavior changed between pandas 0.12 and 0.13
Change comment about display.line_width