Adds basic support for the Swift programming language

Text only lexer for now until Pygments catches up
Merge pull request #1237 from alindeman/swift

Adds basic support for the Swift programming language
Bumping to 2.11.2
Merge pull request #1238 from github/cut-release-2.11.2

Bumping to 2.11.2
added zmpl language declaration
Create sample.zmpl
added missing lexer for zimpl
rename sample directory
smaller code sample
added extra extension for zimpl
added yet another zimpl extension that is in use
fixed zimpl declaration position collation order problem
Samples
Merge branch 'master' into 1239-update

Conflicts:
	lib/linguist/samples.json
Pedantic
Dammit
Merge pull request #1241 from github/1239-update

1239 update
Add a multitude of Forth file extensions.
Yes, these are all in use.
Add Groff sample.
Update samples.json.