Squashed commit of the following:
commit 0361dbe356
Author: Andrea Faulds <ajf@ajf.me>
Date: Fri Mar 25 16:59:20 2016 +0000
UPGRADING and NEWS
commit dca9d4a36c
Author: Andrea Faulds <ajf@ajf.me>
Date: Fri Mar 25 16:45:18 2016 +0000
Add tests contributed by @jesseschalken
commit e557f77eab
Author: Andrea Faulds <ajf@ajf.me>
Date: Fri Mar 25 16:44:51 2016 +0000
Rebuild VM
commit 70942e4c3c
Author: Andrea Faulds <ajf@ajf.me>
Date: Wed Feb 24 13:12:26 2016 +0000
Add test for evaluation order of nested list() keys
commit ed3592e80c
Author: Andrea Faulds <ajf@ajf.me>
Date: Wed Feb 24 12:42:04 2016 +0000
Add test for evaluation order
commit 589756cbcc
Author: Andrea Faulds <ajf@ajf.me>
Date: Tue Jan 19 17:29:34 2016 +0000
Allow arbitrary expressions for key
commit 3f622077c3
Author: Andrea Faulds <ajf@ajf.me>
Date: Tue Jan 19 17:45:10 2016 +0000
Remove compile-time HANDLE_NUMERIC (see bug #63217)
commit bab758119a
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Jan 17 01:20:26 2016 +0000
Handle numeric strings
commit 14bfe93ddc
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Jan 17 01:09:36 2016 +0000
Allow trailing comma
commit f4c8b2cb30
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Jan 16 23:47:11 2016 +0000
Add tests
commit 0085884a61
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Jan 16 22:24:23 2016 +0000
Handle non-integer/string opcodes
commit e572d2d0ad
Author: Andrea Faulds <ajf@ajf.me>
Date: Sat Jan 16 21:10:33 2016 +0000
Disallow mixing keyed and unkeyed list() elements
commit cede13ccfe
Author: Andrea Faulds <ajf@ajf.me>
Date: Sun Jan 10 20:46:44 2016 +0000
list() with keys (no foreach or tests)
