Floating point binary operations implemented (untested).
Added TODO list.
Fixed float printing (need to print x.0 and not x.)
Fixed `global` declaration printing (but TLE_Global will evolve later)
Fixing a parser conflict between `br label %1` and `br typ c, label ...`
typ may be label. Solved allowing any type instead of just label for
control flows.
Merge branch 'master' into metadata
Used tident instead of (typ * ident).
Ignored metadata during parsing (still failing on some cases).