Added more context to no-ddl error messages
merge ScottDugas: Added more context to no-ddl error messages

Merge pull request #92 from ScottDugas/sql-layer-client-tools/no-ddl-error-message
https://github.com/FoundationDB/sql-layer-client-tools/pull/92
Release 2.0.0
Bump version to 2.1.0
merge nathanlws: Bump version to 2.1.0

Merge pull request #94 from FoundationDB/sql-layer-client-tools/bump-version-2.1.0
https://github.com/FoundationDB/sql-layer-client-tools/pull/94
unified WARN, Warning and WARNING, + only throw WARNING: Newlines removed from history only once
merge SytzeH: Unified WARNING prefix, only print newlines remove once

Merge pull request #95 from SytzeH/sql-layer-client-tools/warning
https://github.com/FoundationDB/sql-layer-client-tools/pull/95
Collect warnings.
Add some tests of that.
Recognize (unquoted) NULL as such.
Use the state instead of a separate field.
merge MMcM: Recognize (unquoted) NULL as such in MySQL loader

Merge pull request #97 from MMcM/sql-layer-client-tools/mysql-nulls
https://github.com/FoundationDB/sql-layer-client-tools/pull/97
merge MMcM: Add load warnings to the error log

Merge pull request #96 from MMcM/sql-layer-client-tools/load-warnings
https://github.com/FoundationDB/sql-layer-client-tools/pull/96