Adding warning for running from bare cmd
Call ImmutableList<T>.AddRange from ConvertAll and FindAll

Replace any remaining calls to ImmutableList<T>+Node.Add and
ImmutableList<T>+Builder.Add from within a loop to calls to the
equivalent AddRange method
Remove import of System.Linq, reference namespace explicitly.
Fix misspelled Utf8NullTerminatedStringStartsWithAsciiPrefix
Fix comment typos in MemoryBlock
Fix misspelled test Utf8NullTerminatedStringStartsWithAsciiPrefix
Fast implementation of Hamming weight

The target method: System.Reflection.Internal.BitArithmetic.CountBits
Old implementation uses 24 arithmetic operations
New fast implementation uses 12 arithmetic operations
System.Xml.XDocument Typos

System.Xml.XDocument Typos removed tabs in typo fixes
System.Xml.XmlDocument Typos

System.Xml.XmlDocument removed tabs from typo fixes
System.Xml.XPath Typos

System.Xml.XPath removed tabs in typo fixes

System.Xml.XPath undo wrong typo fix
System.Xml.XPath.XmlDocument Typos
System.Reflection.Metadata Typos
System.Numerics.Vectors Typos

System.Numerics.Vectors removed tabs in typo fixes
System.Collections.Immutable Typos

System.Collections.Immutable removed tabs from typo fixes
Adding more direct link to the .NET Foundation Forums
Merge pull request #167 from Petermarcu/forum_link

Adding more direct link to the .NET Foundation Forums
Reduce Node sizes by shrinking "height" from Int32 to Byte
Merge pull request #168 from stephentoub/immutable_node_size

Reduce Node sizes by shrinking "height" from Int32 to Byte
Limit application of the JitIntrinsicAttribute

This attribute should limit where it can be placed to something that the
JIT will respect.
Remove unnecessary allocations from Keys, Values, and ContainsValue members