Sizing calculator: update with new version
Sizing calculator: fix typo
Merge pull request #154 from mnunberg/stage

Updated release notes for C client 2.4.1
.NET SDK: add number base to operation result codes table (NCBC-609)
PHP SDK: publish 2.0 beta developer guide
C client: Fix up version numbers in release notes

Remove "GA" trailer from GA versions, and place version numbers for
previous two releases.