Fix document export of Trail objects (fixes #839)
Fix trail helpers for land layers (fixes #838, ref #842)
Ignore error in cleaning task

If lib/src doesn't exist (which is initially the case you checkout the
repo), find will fail. Adding a dash in front of the command tells make
to keep executing the rest of the commands.
Update changelog
Bump version
Fix migration of draping utility function
Bump version
Remove 3D from JS WKT serializer
Safety check if path is less than 1m
Update changelog
Remove mentions of 2154 projection in schema migrations
Fix performance issues in altimetric JSON (fixes #845)
Merge branch 'master' into develop

Conflicts:
	CHANGES
	VERSION
	conf/buildout.cfg
	docs/conf.py
Add spanish translation