Build the declaration files generated in the rwc run to make sure there arent any errors
Use our own scanner for 'isNumericName'.
Handle numeric signs in 'isNumericName'.

To be fair, I don't think humanity knew about negative numbers until like 200 B.C.E.
Ensure that numeric names are in their printed form.
Quick edit to comment.
Merge branch 'master' into numbersAreHard

Conflicts:
	tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations.errors.txt
Make things more conformant with 9.8.1 of EC-262 spec.

Specifically, a numeric property is simply now any property whose name N is equal to ToString(ToNumber(N)).
Explain what is happening in 'isNumericName'.
Extract the write methods into a display builder in the checker
Merge branch 'master' into rwcRunner
Add after block to the describe blocks of project runner and rwc runner
Get rid of getRootSymbol and include target's flags in transient symbol's flags
Further refactoring the rwc tests
More comments.
Merge branch 'master' into numbersAreHard

Conflicts:
	src/compiler/checker.ts
	tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations.errors.txt
	tests/baselines/reference/numericIndexerConstrainsPropertyDeclarations2.errors.txt
Union types in contextual signature instantiations
Straight quotes in Language Specification
disable source map record validation in RWC runner
Merge branch 'master' into rwcRunner
IOR is a simple script for dealing with IO Replay files