MAINT: remove superfluous templating fragment.
MAINT: change templating to numpy .c.src templating mechanism.
MAINT: convert wavelets.template.c to Numpy .c.src templating.
MAINT: convert the other pywt/src/*.template.* files to numpy templates.
MAINT: remove util/templating.py
Merge pull request #41 from rgommers/templating

Change to Numpy templating system
MAINT: remove duplicate version number in setup metadata.
PEP8: fixes in runtests.py and setup.py

[ci skip]
MAINT: update six.py to not use lazy loading.
MAINT: demos: remove demos that don't add anything, add comment on C API.
MAINT: demos: update benchmarks.py and dwt_signal_decomposition.py
MAINT: demo: update dwt_swt_show_coeffs.py and plot_wavelets.py
MAINT: demo: update swt2.py demo, add figure and axis titles.
MAINT: demo: remove user_filter_bank.py, that's covered in the docs already.
MAINT: demo: update WaveletPacket and WaveletPacket2D demos.
MAINT: demo: remove wp_tree.py, not useful.
MAINT: demo: update waveinfo.py
MAINT: move ecg data into a .npy data file.
Merge branch 'demo-update' into master.

- Updates all files in the demo dir to currently standard idioms.
- Removes not-so-useful files.
- Adds some comments and figure titles to make things more understandable.
TST: add basic unit test for wavedec2/waverec2.