Änderungen

Promote integer literals to floats
When compiling Jass to Bytecode we now convert Int literals into Real 
literals when the asked type is real. This way `2*x` is the same as
`2.0*x` (in the correct context) which we need to have to be able to
correctly match against the former case in the rewrite step.
 (commit: b86eac1)

Better error message in Hot.Init.Rename
 (commit: c1cd379)

Update Readme
Since we inject `JHCR_Init` directly nowadays users don't have to call
it themselves anymore.
 (commit: 536164b)