Add 2012/tromp/try.sh, update bugs.md + formatting

The try.sh has a variety of commands, some that come from the judges and
some that come from the author.

The bugs.md has features added, not bugs.

The README.md file has been format and typo checked.

The how.md file has been format and typo checked.

The author stated that there is a macro that indicates the term space
but as it's a big number and I don't see it being a problem I did not
(unlike in other cases) add alt code that lets one redefine it.

bugs.md

@@ -2769,6 +2769,33 @@ musical element of a line is only 2 characters!
 The manual referred to is [here](2012/deckmyn/deckmyn.md).
 
 
+## 2012 tromp
+
+### STATUS: INABIAF - please **DO NOT** fix
+### Source code: [2012/tromp/tromp.c](2012/tromp/tromp.c)
+### Information: [2012/tromp/README.md](2012/tromp/README.md)
+
+The author stated:
+
+```
+If the input doesn't start with a valid program, that is,
+if the interpreter reaches end-of-file during program parsing,
+it will crash in some way. E.g. the following might dump core:
+
+    echo -n "U" | ./tromp
+
+Furthermore, the interpreter requires the initial encoded lambda term to be closed,
+that is, variable n can only appear within at least 'n' enclosing lambdas.
+For instance, here the term '\ 5' is not closed, causing the interpreter to crash when
+looking into a null-pointer environment:
+
+    echo ">Hello, world" | ./tromp
+
+will likely dump core.
+
+```
+
+
 ## 2012 vik
 
 ### STATUS: INABIAF - please **DO NOT** fix