Add support for reading gstlal trigger files
Created by: dethodav
This pull request aims to add support for reading gstlal trigger files.
The rationale for a specific gstlal format is
- A desire to calculate some useful derived quantities. This feature is available for only pycbc trigger files at present.
- The gstlal statistic requires additional inputs beyond what is included in trigger files in order to calculate the ranking statistic. However, the comparable quantity is stored in the
coinc_eventtable. Hence reading in both thecoinc_eventandcoinc_inspiraltables at once would be a useful feature.
Thew new proposed format heavily relies upon the current ligolw functionality, with the addition of the two features above.