src/log4net/Repository/Hierarchy/XmlHierarchyConfigurator.cs (3 lines):
	- line 166: // TODO: deprecated use of category
	- line 1003: // TODO: Deprecate use of category tags
	- line 1005: // TODO: Deprecate use of priority tag


src/log4net/Util/TypeConverters/ConverterRegistry.cs (3 lines):
	- line 99: // TODO: Support inheriting type converters.
	- line 102: // TODO: Is destinationType required? We don't use it for anything.
	- line 129: // TODO: Support inheriting type converters.


src/log4net/Appender/FileAppender.cs (1 line):
	- line 643: // TODO: add timeout?


src/log4net/Util/PatternString.cs (1 line):
	- line 263: // TODO - have added common variants of casing for utcdate and appsetting.


src/log4net/Core/LoggingEvent.cs (1 line):
	- line 1159: // TODO: Add Repository Properties


src/log4net/Core/DefaultRepositorySelector.cs (1 line):
	- line 652: // TODO: Support other types of configurator


src/log4net/Appender/SmtpAppender.cs (1 line):
	- line 338: // TODO: Consider using SendAsync to send the message without blocking. We would need a SendCompletedCallback to log errors.


src/log4net/Layout/Pattern/StackTracePatternConverter.cs (1 line):
	- line 118: // TODO: make this user settable?