WIP ENH: Add "limit" argument to dijkstra
ENH: Limiting works
FIX: Fix old np test
STY: Minor fix
STY: Cleaner docstring, check limit
ENH: Use int shape
ENH: Faster shaping
BUG: runtests: make -t option work again
Merge pull request #3005 from pv/runtests-path

BUG: runtests: make -t option work again
Merge pull request #2995 from Eric89GXL/signaltools-int-fix

ENH: Use int shape
Merge pull request #2992 from Eric89GXL/dijkstra-limit

ENH: Add "limit" parameter to dijkstra calculation
DOC: forward port 0.13.0 release notes from the 0.13.x branch
MAINT: forward port changes to release scripts from 0.13.x branch