New Scripts and Changes

1. Bugfix: All scripts that accept a radius are now inclusive in range.
2. Change Name: cyclone.lua -> propel.lua
3. Change Name: radiuseffect.lua -> changefixed.lua
4. Change Name: weather.lua -> customweather.lua
5. Addition: added descriptions to each script
6. Change Function: changefixed.lua now increases or decreases the
current value (excepts negative values). Can be used to "cure" units of
paralysis and such.
7. New Script: changeboolean.lua used to change boolean flags for a set
time period.
8. New Script: changepercent.lua used to change a percentage amount of
specific values (currently only works for blood_count)
9. New Script: teleport.lua, build buildings that can be used to
teleport between them