v1.9.0

IMPROVEMENTS:

• feat: add newrelic_plugins_alert_condition resource (#234)
• feat: add newrelic_insights_event resource (#246)
• feat: add ability to import newrelic_alert_channel resource (#241)
• feat: add ability to import newrelic_alert_policy_channel resource (#249)
• feat: add ability to import newrelic_infra_alert_condition resource (#254)
• feat: add ability to import newrelic_nrql_alert_condition resource for all condition types (#250)
• feat: add violation_time_limit_seconds attribute to newrelic_nrql_alert_condition resource (#198)
• docs: various improvements

BUG FIXES:

• fix: speed up newrelic_application data source state refresh for accounts with many applications (#263)
• fix: newrelic_alert_policy data source now matches on policy name more strictly (#197)
• fix: newrelic_alert_channel data source now matches on channel name more strictly (#197)