1.4.2

Fixed

• Stopped the events/register HTTP client logging a spurious WARN o.a.h.c.h.i.c.DefaultCacheInvalidator: https://events.featureflow.io/api/sdk/v1/events is not a valid URI on every event flush. The message comes from an inverted null check in Apache httpclient5-cache 5.2.x that fires on every non-cacheable (POST/PUT) request; the URI was always valid and events were delivered normally. The events/register transport now uses a plain HttpClients instance, since it only ever POSTs and PUTs and had no use for the caching layer. Feature polling is unchanged and keeps its caching transport for ETag handling.