Fixes #4 .

- Provide a function in the BaseSearchClass to read in the ephemeris
  files
- Some clean up of docstrings

If detectors is not specified, det=None, then in the outfile simply use
'NA' to indicate this.

This renames the input sftfilepath to sftfilepattern and adds
documentation on how that should be used, i.e. a colon separated list of
wildstring or exact matches. In globbing for all matches, the colon
split is added in. sftfilepath is still used by `Writer` since
an exact path is known.

Gregory Ashton authored Jul 17, 2017 and Gregory Ashton committed Jul 17, 2017

Previously, each search class named its own output file. This provides a
function `set_out_file` in the top-level class which sets the `out_file`
attribute to be used.
- Adds class name to the out_file for clarity
- Add detectors used

Note - conflict resolved whilst cherry-picking

Previously, each search class named its own output file. This provides a
function `set_out_file` in the top-level class which sets the `out_file`
attribute to be used.
- Adds class name to the out_file for clarity
- Add detectors used

- In a prior commit, the number of sidebands checked for the normal search
(i.e. SSBprec=2) was erroneously set to M0, rather than 9. This fixes
that.
- Also improves logging output
- Splits of the UniformPriorToGrid run function to produce the data and
  plot separately

 -ported check from MCMC search
 -bug: for single-str SFT path, glob list comprehension
  was trying every single character

- Adds ability to use either a dict or a par file
- Fixes bug in which if tstart and tend aren't specificed the data
  saving mechanism breaks

- Adds injectSources to a variety of other methods
- Adds conversion of injectSource to pfs_input

1) Add ability to in F0s, F1s etc in grid search directly (use tuple as (is)
2) Update cumulative legend
3) Add option to produce pfs_input directly to calculate_pfs
4) Fix spelling mistake
5) Update transient example in the paper

1) Adds check if the truths are not of the correct length (to prevent
corner.corner error)
2) Improve sliding window labels
3) Adds option to plot gps seconds on the sliding window

A search, based on Reinhard's J0537-6910 work, in which the search is
performed over F0 in a sliding window. Able to track changes in the
power and frequency of the signal.

- Adds latex prior table writer (not found to be useful)
- Add special case of 0 to texify_float
- Expose texify_float in core
- Fix confusing argument order in GridSearch

If nsegs > 1, a semi-coherent search is performed.

- Adds a simple interface to get grid search given uniform prior
- Fixes detector -> detectors bug (previous versions, the constrains
  where not actually set)
- Adds title functionality to plot2D

Transforms the single pyfstat.py into a python module splitting the
relevant code into separate sub-files in pyfstat. This should result in
improved readability.