dxWDL 2.0.0-rc6

• Upgrades wdlTools to 0.11.0
• Fixes the issue with type-checking struct-typed objects
• Adds hooks for user-defined functions, which is needed for the new archive/unarchive operations that will be added
• Uses file name when creating names for scatter jobs
• Uses dnanexus-executable.json to get type information about applet input/output parameters, and uses it to type-check the actual inputs/outputs. Ignores hash types, which might be JSON objects or schemas
• Adds streamFiles compile option
• Moves API code to dxApi library
• Moves DxFileAccessProtocol to separate protocols library
• Moves WDL type serialization code to wdlTools
• Makes array type-checking less strict (to coerce between empty and non-empty array types)

dxWDL 2.0.0-rc5

• Upgrades wdlTools to 0.10.5
• Adds dxCommon dependency
• Sets either default or null value for missing optional block inputs, and throws an exception if there are any missing required block inputs
• Addresses the situation where a call input references a field of the scatter variable
• Updates the mechanism of comparing instance types to select the cheapest one for execution
• Fixes to the "x appears with two different callable definitions" compilation error
• Increases disambiguation dir limit to 5000
• Simplifies job names