Correct and clarify some stuff in README

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Add all the relevant papers used for research

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Add a list of papers to README

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Separate README and TODO files

This separates the files and hopefully brings in more clarity. Also,
both of the files were updated to reflected the current state of the
project.

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Add the paper by Canizares et al. 2013

This paper is the main one on the Reduced order quadrature methods on
gravitational waves. However, the application here is for LIGO detector,
but the method should be aplicable for the PTAs as well.

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Add a recent paper by Taylor and Gair.

I still need to read it though and add it into the repo

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Update the reduced basis module

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Move the Python/Cython implementation into a separate folder.

This separates the project slightly better, as I will probably have
other implementations to check how well this thing scales.

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Prepare paper branch for merging

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Merge branch 'papers'
Covariance matrix member calculations

Implement most of the formulae for covariance matrix construction. The
spectral noise density formula is still needed and I need to find a way
to implement the noises in the signal generation as well. This could be
done via pulsar grid construction routine.

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Tidy up the .gitignore files a bit

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>
Change the noise addition framework and implement Power Law noise

This changes the noise generation framework (which will be needed for
future work in order to include Red Noise etc.). The code should work
correctly at this moment.

Signed-off-by: Ignas Anikevicius (gns_ank) <anikevicius@gmail.com>