add complex polygamma and Hurwitz zeta functions (fixes #7033)
fixed type-stability of chorner and polygamma (workaround for #7060)
NEWS update for polygamma
Use '-t' option in git checkout to set upstream tracking on branches. Fixes #5476.
Merge pull request #7125 from stevengj/polygamma

RFC: add complex polygamma and Hurwitz zeta functions
update doc for Timer
specialize length(SubString) for DirectIndexString
document division error behavior
Fix printing of commas in Dict showcompact
bugfix in zeta(s,z) for complex s and real z
simpler version of fix from commit f70673f60ea11074a3763379eab936d72f451c24
Merge pull request #7144 from mbauman/fixshowcompact

Fix printing of commas in Dict showcompact
Merge pull request #7138 from quinnj/jq/checkout

Add '-t' option to git checkout
When generating new packages, run remote add before manually configuring the remote so that the fetch refs are set in teh .config file. Fixes #5480.
show time spend during garbage collection in @time macro
Improve formatting according to Stefans suggestion
change order of commands in time macro
Merge pull request #7141 from quinnj/jq/generate

Pkg.generate tweak
Merge pull request #7143 from tknopp/timegc

Show time spent during garbage collection in @time macro (implement #7119)
add tests for length(SubString{ASCIIString})