* fix channel permissions modify parameter to use nullable boolean, correct default value

* Add general tests for the ChannelPermissions.Modify method to test default values

* remove unused cast in tests

* add guildpermission modify no param tests

* Add no-param modify tests for OverwritePermissions

* fix inconsistent parameters in GuildPermissions cstr

* Adjust formatting of methods and cstrs with many parameters

* remove temp file that was included. no idea what that is

* Fix System dependency

I should really stop fixing merge conflicts in the github website.

- Replaces the usages of `ReadMessages` with `ViewChannel`
- Renames the read message parameters of `GuildPermissions#Modify` to be view channel as well

* Update deps, fix test warnings.

* Support ns2.0

* Fix typo

* Remove ns1.1 support

* Net.Http and Net.Websockets.Client are not needed in ns2.0

* Move to net46 per volt

* Remove ns1.3 constants

* Add tests for more Permissions code coverage

* Add guild tests

* Add more in-depth covering of permissions methods

* Add tests for OverwritePermissions

* Remove unknown ItemGroup tag from csproj

* Add missing Fact attributes, separate class so that it is not dependant on main test fixture

* Separate out GuildPermissions and ChannelPermissions tests from main partial Tests class because they do not need to have access to the main test fixture