PyFstat/PyFstat: PyFstat release v1.5.0

This is the v.1.5.0 release of PyFstat, a python package for gravitational wave analysis with the F-statistic, dated 30/07/2020.

This release requires at least python 3.6.

From the changelog since the previous version (v1.4.2):

• new default coverage band behaviour for all search classes:
  • estimate from search ranges (GridSearch) or prior (MCMCSearch) unless minCoverFreq, maxCoverFreq set
  • negative values can be used to reproduce old default of setting from SFT width
  • explicit option estimate_covering_band deprecated
• semicoherent searches:
  • sped up by only calling ComputeTransientFstatMap once per point
  • BSGL now computed from summed F-stats, not for each segment
  • per-segment results now stored in attribute twoF_per_segment instead of det_stat_per_segment
• MCMC searches: save twoF for each sample to .dat file
• Writer:
  • options minStartTime, maxStartTime deprecated
  • always use tstart, duration for actual data range
  • and use transientStartTime, transientTau for transients
• transient-on-GPU output file writing fix
• examples:
  • all output now goes to a directory "PyFstat_example_data"
  • added mcmc_vs_grid_simple_example