Replacement TidyNet dll.
The umbraco packaged TidyNet.dll has a function that auto converts the following :-
Dashes:
en dash (hex 2013) to standard dash
em dash (hex 2014) to standard dash
Single quote:
left single quote (hex 2018) to standard single quote
right single quote (hex 2019) to standard single quote
single low-9 quotation mark (hex 201a) to standard single quote
Double quote:
left double quotation mark (hex 201c) to standard double quote
right double quotation mark (hex 201d) to standard double quote
double low-9 quotation mark (hex 201e) to standard double quote
In most cases this is not wanted so this package has a replacment dll that skips the conversion if TidyCharEncoding option in 'config\umbracoSettings.config' is set to 'UTF8' (default) or 'Raw'
Package based on post by Alexander Bryukhov at http://our.umbraco.org/forum/ourumb-dev-forum/bugs/8228-Can%27t-insert-em-dashes
Uninstall
If you uninstall this package you may need to manually rename /bin/TidyNet.dll.org.bak to /bin/TidyNet.dll