add TagBot

[bjarthur]

No description provided.

[codecov-io]

Codecov Report

Merging #1364 into master will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1364      +/-   ##
==========================================
- Coverage    90.6%   90.55%   -0.06%     
==========================================
  Files          38       38              
  Lines        3961     3961              
==========================================
- Hits         3589     3587       -2     
- Misses        372      374       +2

Impacted Files	Coverage Δ
src/ticks.jl	90.32% <0%> (-1.49%)	⬇️
src/aesthetics.jl	81.51% <0%> (-0.39%)	⬇️
src/shapes.jl	100% <0%> (ø)	⬆️
src/statistics.jl	96.93% <0%> (+0.04%)	⬆️
src/coord.jl	91.57% <0%> (+0.18%)	⬆️

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[bjarthur]

a second commit changes CompatHelper frequency from every minute (doh!) to once per week.

[bjarthur]

a third commit changes CI to test on julia 1.3

[tlnagy]

Isn't this once per day?

[bjarthur]

midnight on sunday, so once per week. https://crontab.guru/#0_0_*_*_0

[bjarthur]

it's a shame that both tagbot and compathelper poll. would be nice if they could be re-engineered to use interrupts.

[bjarthur]

worth noting that the change to travis specifies "julia 1", not "julia 1.3". so when 1.4 etc is released it will automatically start testing on it. just learned this was possible from tim holy's work on indirectarrays.jl.