moving opts out of the formulae namespcae
changing pylab to  matplotlib.pyplot
changing pylab to  matplotlib.pyplot
moving basic plot settings to new file
moving analytical eq to new file
moving plot settings from plot2D
Merge pull request #116 from slayoo/master

moving opts out of the formulae namespcae
Merge pull request #117 from djarecka/master

moving analytical equations and plots settings to new files
adding listing tags in test concurrent_1d
Merge pull request #118 from slayoo/master

adding listing tags in test concurrent_1d
sync with igfuw