Turn back on precompilation

Precompilation was inherited from Currencies originally, but was lost in the transfer. This restores it.

Author: TotalVerb

src/FixedPointDecimals.jl

@@ -21,6 +21,8 @@
 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+__precompile__()
+
 module FixedPointDecimals
 
 export FixedDecimal