Nothing new added or changed
basic object oriented programming concepts.
Created the 1D FFT lab and added it to vol2 imports.
Lab: Graphical User Interfaces
Use object oriented design to make a graphical user interface in Qt.
Add a few extra explanations about Qt.

Remove tabs in web navigator project.
Make lab classify consistently with other Python labs.
Lab: Object Oriented Programming
Lab: Graphical User Interfaces
Continued editing fft labs and added some necessary files including plot creation file.
added a section on paradigms

Also included a problem that assigns reading for class magic methods.
Merge branch 'fft' of https://github.com/jhendr/numerical_computing into fft
added the two main problems to be solved
Split/rearrange labs

Split CorrCovariance and LeastSquares labs into separate folders with
their datasets.

Updates to Vol1.tex and Vol2.tex
updates to volume structure
missing files for english vowels lab
update vol3 tex

Update Volume 3 to include some missing labs
missing /
Merge pull request #195 from ayr0/paradigms

Object oriented programming
remove the need of unicode for a single letter

Make a troublsome unicode letter an image instead that can be included.
  Some platforms are difficult to use latex with unicode.
update Vol1

Remove some old orphaned labs and left over crud.
remove ,