remove travis badge from readme

set minimum permissions for go.yaml

Signed-off-by: Gabriela Gutierrez <[email protected]>

Remove travis

make sure no randomness is used when randomizationFactor is 0 (#118)

in current implementation there is the following issue - it's not possible to disable randomization.
I'd expect that if I set randomizationFactor to 0, no randomness will be done.

I've updated the code accordingly to fix the issue.

Remove context deadline checking in backOffContext (#113)

* Remove ctx deadline check

* Add context error checking after stop

Remove context deadline checking in backOffContext (#113)

* Remove ctx deadline check

* Add context error checking after stop

bump minimal go version to 1.13

add next interval to elapsed time before deciding to stop exponential…

… backoff #95

Fix crash if nil passed to NewTickerWithTimer

Doc for function says that passing nil for the timer argument should
cause the default system timer to be used.  Ensure that that timer is
actually assigned.

do not panic when stopping nil timer; fix #88