nav_generate_expanded & nav_generate_cheap now use teleport exits, and doors as extra seed positions

Fix obstacle merging

Add NAV_CROUCH check logic

Make navmeshAutoAttemptMerge public

Big changes

Made fencetop detection more thorough
Added navmesh_generate_expanded
Added navmesh_generate_cheap
Added navmesh_override_expensive
Added navmesh_ischeap

Added some function documentation on workshop page.

navmesh_globalmerge_auto Will now only create expensive navmeshes when it starts off with one. ( or if it's forced to )

Add NAV_MESH_NO_MERGE check

Fixed not merging fencetop areas

fix

Minor performance optimisations

Explain differences between commands better