[foxy backport] Derive and throw exception in spin_some spin_all for StaticSingleThreadedExecutor#1385

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brawner merged 2 commits intobrawner/rclcpp-backport-tests-part1from

brawner/rclcpp-backport-1220

Oct 7, 2020

Commits on Oct 6, 2020

Derive and throw exception in spin_some spin_all for StaticSingleThreadedExecutor (#1220)
brawner
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Remove header changes and throw exceptions in .cpp
brawner
committed