Add  ST_BoundingCircle and ST_Densify
Add st_expand function
Fix st_expand and add tests
Add st_octogonalEnvelope and St_minimumRectangle
Add ST_RemoveRepeatedPoints
Prepare the st_extrude function
Improve extrude on linestring
Improve extude method
Add new edit and create functions and utilities
Improve st_extrude function
Fix st_expand and add st_makeenvelope
merge
Gib fix for @Nicolas
Update docs
Merge pull request #1 from agouge/erwan

Update docs
Add edit functions ST_Interpolate3DLine, St_Reverse and ST_Reverse3DLine plus fix headers
Conflicts:

	h2spatial-ext/src/main/java/org/h2gis/h2spatialext/function/spatial/edit/ST_RemoveHoles.java
Add edit functions ST_AddPoint, St_Split and ST_Snap
Add edit function ST_RemovePoint
Add simply functions
Units test and st_addztoextremities function