Cancel Previous Gathering Routine On Restart

[wawesomeNOGUI]

Description

Updated ICE agent restart method to cancel the current gathering and then restart the candidate gathering process.

Reference issue

Fixes #280

[codecov]

Codecov Report

Base: 77.86% // Head: 77.92% // Increases project coverage by +0.06% 🎉

Coverage data is based on head (b9d9680) compared to base (7f2d498).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head b9d9680 differs from pull request most recent head 12992ff. Consider uploading reports for the commit 12992ff to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #328      +/-   ##
==========================================
+ Coverage   77.86%   77.92%   +0.06%     
==========================================
  Files          36       36              
  Lines        4237     4236       -1     
==========================================
+ Hits         3299     3301       +2     
+ Misses        729      727       -2     
+ Partials      209      208       -1     

Flag	Coverage Δ
go	77.92% <100.00%> (+0.06%)	⬆️
wasm	24.59% <0.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
agent.go	82.01% <100.00%> (-0.39%)	⬇️
gather.go	66.35% <0.00%> (+0.36%)	⬆️
selection.go	84.18% <0.00%> (+1.86%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[stv0g]

LGTM.

I've squashed and rebased the changes to the latest master.