Made the snake use the stun and agility dampening effects for its attacks.

This make that enemy much more dangerous.
Added grass into the south western map and a small new scene...

... where Kalya explains snake are better far from them two.
Made the forest cave map be a bit more spooky.
Tested a new grass to grass variation in the wood tileset.

I used also some grass clump to hide defects.
Finally hide the defects in the riverbank map.
Added the scene where Kalya sees Orlinn near the cave entrance.
Added the possibility to trigger events when opening a treasure chest.

And used it to trigger a battle when opening the chest near the cave entrance.
Finished the cave map skeleton. Scripting will come in another commit.
Kept working on the cave map and related files.

The cave shape is somehow complete, but some new engine features
are needed to make it complete.
Added basic trigger objects, and used them into the cave map.
Added triggers up to the end of the 1st cave map.
Added the way up to the new save point, and up to the next exit.

You'll have first to beat a mother slime. Good luck.
Fixed a misuse of StatusChange call within a skill.

Should fix issue #26.
Turned the use of script object back to new allocated pointers.

This was partly the former use of it, and it took me time to figure out
why.

Some crashes at app exit were thus caused by my changes, but also
by other code part. This should lessen the crashes seen at app exit
a lot, even if luabind can still cause a crash in lua for a reason
I'm not aware of.
Added bat enemies flying around in the cave map.

The map is almost complete now.
Made the wooden sword be priceless to avoid permitting its sell at game start.
Made the tileset editor supports mouse dragging to paint collision tiles.

I also made it remember whether the user is currently willing to add
or remove collision tiles when dragging.

This should ease a lot tileset collision editing.
Improved the grammar and style of the English language text seen throughout the game
Merge pull request #27 from rootslinux/master

English language text improvements
Started working on the next map.

For now, it's still a very early start.