Omit RCL/metamacros.h from built framework
WIP declarative layouts with macros
Actually, key sorting is unnecessary
Test a nested macro implementation
Revert "Test a nested macro implementation"

This reverts commit d262be260223ee0d359113cc96abe0ec43684659.
Revert "Actually, key sorting is unnecessary"

This reverts commit f48bfaef35f749e51b0092204b1f9240356714e0.
Working unit test
More built-in bindings
Merge branch 'master' into declarative-layouts
Split RCLMacros test into its own spec
Document RCLFrame and RCLAlignment

Also, remove RCLBounds, because a lot of the layout attributes don't
really make sense for it.
Document attributes
Remove unneeded metamacros import
Add rcl_baseline for aligning two views' baselines
Merge branch 'master' into declarative-layouts
Use the alignment/frame rect for baseline alignment
Simplify rcl_rect
Fix rcl_baseline multicasting
Use RCLAlignment in DeviceRotation demo
Use RCLAlignment in ResizingWindow demo