Inserted reference to Language.pdf

fix Issue#61

instances for Integer and Bool

use function pointers of imported modules - saves 1000 classes and 1.…

…5MB on fregec.jar

Add Semigroupoid type-class

proposed fix for issue#50

Handle strictness annotations better and promote them up to code gene…

…ration

Merge branch 'literals'

New runtime system and code generation.

version 3.20 after implementing new version scheme