1.29.2
What's Changed allow 0s for alerting rule for and keepFiringFor in config by @def in #1090 fix: check errors returned by JSON encoding by @KSDaemon in #1091 chore: remove ineffectual assignments by @KSDaemon in #1092 chore: do not shadow predeclared identifiers by @KSDaemon in #1093 chore: fix perfsprint lint issues by @KSDaemon in #1094 chore: use standard library idioms by @KSDaemon in #1096 cho…