Release 1.2.4

Hotfix release removing dependence on deprecated Rclusterpp package.

Release 1.2.3

Hotfix release includes small updates to test cases and documentation.

Release 1.2.2

Hotfix release includes only a single small change: 'metric' parameter is
set to NULL if either of 'vecmet' or 'matmet' is specified.

Release 1.2.1

Hotfix adds missing quotes around values in the vignette YAML header. Not including quotes caused vignette to fail at build.

Release 1.2.0

Minor release update including:
- vignette now matches package README and passes build

Release 1.1.2

Hotfix release includes updated README re-rendered using latest package
version. Previous release (1.1.1) still included README generated using
last minor version (1.0.0).

Release 1.1.1

This release incorporates a quick fix to a test case in shc-plot which
references the incorrect ci_idx value.

Release 1.1.0

This release incorporates the following major updates from 1.0.0
along with smaller changes to the package:
- testing order now indexes from the root node,
- test cases are rewritten to substantially increase test coverage.