test gridgen code with regular, rotated and regional SMC grids

[ukmo-ansaulter]

• ww3-grid version: 0.1
• Python version: 3
• Operating System: RHEL7

Description

Further tests and worked examples are needed for reduce, gridgen and smc_test functions for the following grid types:

• Regular regional
• Rotated regular regional
• Rotated regional SMC

Planned code developments

• Bugfixing in reduce, gridgen and smc_test codes as required
• Add a worked example for each of the grid types