Regression tests still run with prose phrase replaced by one with implicit or explicit pattern.
Fixed bug where non-explicit patterns and prose blocks were miscounting their source tree traversal.
Fixed a bug in insertPNode that was causing it not to be properly hooked up to the next node.
Fixed a bug where tags weren't being properly counted in the source tree traversal for implicit blocks.
Fixed a bug where terminal , in patterns weren't auto-substituting themselves.
Labels must be words, now.  (Allowing ids to be labels caused a bug because they're compared by pointer not by name).
Fixed excessive reduction bug in parenthetical reduction.  Added a regression test for this problem.
Implicit/explicit list patterns now work.
Extended DelimiterMatcher to deal with period.  Fixed a bug in UnderscoreMatcher where it wasn't checking to see if it matched before "submitting itself".  Added support for numbers to lexer.  Added @number and AtNumberMatcher.  Started working on simple math in preamble.
Removed comment.
Added SSEStubException.
Merge branch 'master' into feature/implicit-prose-and-patterns

Conflicts:
	Prose/AtPatternMatcher.cpp
	Prose/AtPatternMatcher.h