Update Note 0.06

Bonk!

Update

- Add new unit - Crash: a tank with a rush skill (same as 'charger attack' in Left 4 Dead 2)

- Add a skill to hand cannoneer - shoot purple ball to give enemy area damage

- Add HP bar in UI

- Units can't detect enemy through wall now (It's pointless right now, It will be used later in night time stage)

- Adjust status of units

- Fix bugs... as always

I decided not to add 'shift + command' which allow you to create a series of commands. I realized the program structure I made was not suitable for that.