Add dot as legal char in profile title

Fixes #22

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added
+
+- Dot as a legal character in host profile title. [#22](https://github.com/keeshux/passepartout-ios/issues/22)
+
 ### Fixed
 
 - Incorrect compression warnings when importing host configurations. [#20](https://github.com/keeshux/passepartout-ios/pull/20)

Passepartout/Sources/Utils.swift

@@ -206,7 +206,7 @@ extension CharacterSet {
     static let filename: CharacterSet = {
         var chars: CharacterSet = .decimalDigits
         let english = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
-        let symbols = "-_"
+        let symbols = "-_."
         chars.formUnion(CharacterSet(charactersIn: english))
         chars.formUnion(CharacterSet(charactersIn: english.lowercased()))
         chars.formUnion(CharacterSet(charactersIn: symbols))