Merge pull request #1 from zygm0nt/master

Minor improvements
Update README.md
Update README.md
Merge pull request #2 from zygm0nt/master

concurrency
some cleanup
bigdecimal, bigint, destructuring function args
Merge pull request #3 from pjagielski/master

some cleanup
Merge branch 'master' of https://github.com/warsjawa-clj/clj-workshop

Conflicts:
	src/clj_workshop/features.clj