TST: signal: loosen some error tolerances in the filter tests.  Closes gh-3412.
Merge pull request #3414 from WarrenWeckesser/signal-test-tols

TST: signal: loosen some error tolerances in the filter tests.  Closes gh-3412.
MAINT: tools: add a script that produces a list of closed github tickets for a miletone
MAINT: tools: update author list tool
DOC: release: update autogenerated lists in 0.14.0 release notes
DOC: fix some minor issues in 0.14.0 release notes.
Merge branch 'pr/3415' into master.

Review at https://github.com/scipy/scipy/pull/3415
REL: set version to 0.15.0-dev, add 0.15.0 release notes.
TST: sparse: add new fancy indexing benchmarks
ENH: sparse: add fast paths in LIL for full row/column slices
BUG: sparse/lil: fix izip import for Py3
ENH: sparse/lil: cythonize get_row_ranges
TST: sparse: initialize random seeds in benchmark