Hunspell fix

Patch release to fix Hunspell windows paths

Thanks @caugner.

2.0

Make php-speller fit for the future:

• drop support for php < 7.1
• add support for symfony/console ^4.0
• add PersonalDictionary for Aspell

1.7.2

Fixed

• HtmlFilter: <script> content should be filtered out.
• HtmlFilter: only for "keywords" and "description" meta tags "content" attribute should be treated as string.

1.7.1

Fixed

• HtmlFilter: meta tags with http-equiv should be filtered out.

1.7

Fixed

• #6: Failed to execute "hunspell -i UTF-8 -a": Can't open affix or dictionary files for dictionary
  named "default".
• FileSource throws SourceException when using "php://stdin".

Changed

• HtmlSource should throw SourceException on invalid HTML.

1.6

Added

• Aspell — aspell backend.
• Ispell — ispell backend.
• IconvSource — converts text encoding using iconv.
• MetaSource — base class for meta sources.
• EncodingAwareSource — text source with specified encoding.
• ExternalSpeller — base class for external program adapters.
• Own exceptions.

Changed

• Hunspell class derived from new Ispell class.
• All sources now implement EncodingAwareSource.
• HtmlSource and XliffSource derived from MetaSource.

1.5.1

Fixed

• HtmlSource: only for "keywords" and "description" meta tags "content" attr should be treated as
  user visible text.

1.5

Added

• HtmlSource.

1.4.1

Fixed

• #2: Word suggestions with space splits up

1.4

Deleted

• Dropped PHP 5.4 support.

Added

• PHP 7 support.
• Symfony 3.x support.