Update 2012/deckmyn - try.sh, bugs.md, formatting

The try.sh script is as usual.

The bugs.md has some features, not bugs.

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

The deckmyn.md file has been format/typo checked.

A caveat with this entry is I was not able to verify as much when it
comes to checking things as I do not have a musical background (despite
the fact my family is full of musicians).

bugs.md

@@ -2728,6 +2728,47 @@ fire](https://en.wikipedia.org/wiki/Halt_and_Catch_Fire_(computing)) :-)
 # 2012
 
 
+## 2012 deckmyn
+
+### STATUS: INABIAF - please **DO NOT** fix
+### Source code: [2012/deckmyn/deckmyn.c](2012/deckmyn/deckmyn.c)
+### Information: [2012/deckmyn/README.md](2012/deckmyn/README.md)
+
+The author stated:
+
+```
+The memory locations of `argv` are used for various purposes. Therefore, the
+program name (default `deckmyn`) must be *at least 4 characters long*, including
+possibly the path. This, along with the ending `'\0'`, gives a minimum 5 bytes of
+useful memory space. Otherwise, the program may attempt to write outside the
+string.
+
+The code is quite sensitive. Errors in the input can lead to strange results.
+The code does not read beyond the end of the music input, but that is about the
+only error checking available. Any input that is not according to the rules in
+the deckmyn.md, may cause errors.
+
+The program has no special hardware limitations or requirements, other than 8bit
+`char` (`signed` or `unsigned`) and two's complement negatives.
+
+The limitations of using `char` as counters for e.g. the number of music staves
+are minor. 127 staves to a page is rather a lot.
+
+The file layout must be exactly the same as deckmyn.c though, only the locations
+of space (`" "`) may differ.
+
+Every element in the music is given by a string of *exactly* 3 characters. Any
+violation of this will result in the rest of the music being interpreted in some
+randomly wrong way. Notice that in a file, the newline is also a character!
+Therefore, when preparing music in a file, care should be taken that the last
+musical element of a line is only 2 characters!
+```
+
+
+
+The manual referred to is [here](2012/deckmyn/deckmyn.md).
+
+
 ## 2012 vik
 
 ### STATUS: INABIAF - please **DO NOT** fix