Add branch relocation type

TODO

@@ -9,6 +9,9 @@
 
 - Don't ignore relocations where the symbol is not defined in the symbol table.
   Report an error about an undefined symbol.
+- JumpLabels inside functions are encoded as functions. Distinguish between
+  labels (e.g. .A0 or .L0) and global functions.
+
 
 # Name analysis
 
@@ -28,4 +31,4 @@
 # Other
 
 - Type analysis.
-- Generate call a to _divide_by_zero_error on RiscV.
+- Generate a call to _divide_by_zero_error on RiscV.