[ANN] nFlow 7.3.0 released

[nflow-users]

Hello all,

nFlow 7.3.0 was released on April 5, 2021.

https://github.com/NitorCreations/nflow/releases/tag/7.3.0

**Highlights**
- `nflow-explorer`
  - Sortable workflow definitions, workflow instance search result and executors tables
  - Persist workflow instance query parameters to URL
  - Support wildcard characters when searching workflow instances by business key or external id
- Database scripts
  - Fix issues in Oracle scripts

**Details**
- `nflow-jetty`
  - Dependency updates:
    - jetty 9.4.38.v20210224
- `nflow-explorer`
  - Added missing `executing` status to workflow instance search criteria
  - Included child workflows when auto-refreshing workflow instance actions table
  - Added more child workflow details to workflow instance actions
  - Dependency updates:
    - urijs 1.19.6
    - is-svg 4.3.1
    - y18n 4.0.1
- `nflow-engine`
  - Support SQL wildcards in workflow instance queries by business key or external id
- Database scripts
  - Disable cache for Oracle sequences
  - Fix `nflow_workflow_action_insert` trigger in Oracle database scripts
  - Fix syntax error in `create table nflow_workflow` statement in `oracle.create.ddl.sql`