Add lots of documentation for all functions.

src/core/table.c

@@ -252,11 +252,33 @@ static int cfun_rawget(JanetArgs args) {
 }
 
 static const JanetReg cfuns[] = {
-    {"table.new", cfun_new, NULL},
-    {"table.to-struct", cfun_tostruct, NULL},
-    {"table.getproto", cfun_getproto, NULL},
-    {"table.setproto", cfun_setproto, NULL},
-    {"table.rawget", cfun_rawget, NULL},
+    {"table.new", cfun_new,
+        "(table.new capacity)\n\n"
+        "Creates a new empty table with pre-allocated memory "
+        "for capacity entries. This means that if one knows the number of "
+        "entries going to go in a table on creation, extra memory allocation "
+        "can be avoided. Returns the new table."
+    },
+    {"table.to-struct", cfun_tostruct,
+        "(table.to-struct tab)\n\n"
+        "Convert a table to a struct. Returns a new struct. This function "
+        "does not take into account prototype tables."
+    },
+    {"table.getproto", cfun_getproto,
+        "(table.getproto tab)\n\n"
+        "Get the prototype table of a table. Returns nil if a table "
+        "has no prototype, otherwise returns the prototype."
+    },
+    {"table.setproto", cfun_setproto,
+        "(table.setproto tab proto)\n\n"
+        "Set the prototype of a table. Returns the original table tab."
+    },
+    {"table.rawget", cfun_rawget,
+        "(table.rawget tab key)\n\n"
+        "Gets a value from a table without looking at the prototype table. "
+        "If a table tab does not contain t directly, the function will return "
+        "nil without checking the prototype. Returns the value in the table."
+    },
     {NULL, NULL, NULL}
 };