Adds a minimum circle radius configuration with a very small default (currently the default width of an initially created circle) and also stores the current radius in the circle.
Link to Issue
222
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PR Checklist
[x] There is a associated GitHub issue
[x] If I have added significant code changes, there are relevant tests
[x] If there are behaviour changes these are documented
Description of Changes
Adds a minimum circle radius configuration with a very small default (currently the default width of an initially created circle) and also stores the current radius in the circle.
Link to Issue
222
221
PR Checklist