Add introduction post.

intro.md

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+Hey all! My name is Danila Fedorin, though I typically go by **Daniel**.
+I was born in Russia, but I lived in Holland for a couple of years,
+and subsequently moved to the U.S.. I went to high school and college
+here, so it's been a while since I've lived in a different country.
+I'm a first year M.S. student in Programming Languages working with Dr. Erwig,
+and I got your standard, "boring" CS undergraduate degree from OSU. In my
+free time, I... also do (occasionally functional) programming, play
+inadvisably large amounts of video games (Risk of Rain 2, Sunless Skies, Kerbal
+Space Program), and [write about making a compiler on my blog](https://danilafe.com/blog/00_compiler_intro/).
+
+I've been in the PL research group since my freshman year of college, so this
+is roughly my 4th year working with programming languages and Haskell.
+
+__Which PL courses have you taken at OSU? At other universities?__
+I've taken CS 381, CS 581, and CS 582. I've also sat in CS 583 two
+years ago when Dr. Erwig taught it, but didn't officially take it.
+It looks like the course material is somewhat different in
+this version of the course, though.
+
+__On a scale from 1 to Phil Wadler, how confident are you in your Haskell skills?__
+Phil Wadler when he as 5 years old? I've been writing Haskell for a while,
+and I know higher kinded data types, GADTs, some basic type level programming,
+and I'm fairly comfortable with the "common" libraries like Parsec. However,
+I'm far from an expert in the language.
+
+__Do you know any other functional languages?__
+Elm, Idris, and Coq. For that last one, "knowing" is relative.
+There are so many different language features!
+
+__What programming languages do you know best?__
+It's probably a mix between C++ and Haskell. The problem
+is that "knowing a language best" seems to imply knowing
+the language _well_, which is a claim I'm not sure I can make.
+
+__What do you hope to learn or get out of this class?__
+I'm excited for pretty much all the material! I'd be particularly
+interested in the "free monads" parts of this class, since my
+understanding there is a little bit iffy.