Key
 . = still to do
 - = discarded
 * = completed

. allow bare paths in attribute tests
. add examples
. add usual escapes inside string literals
. simplify axis code in forester
. add math in attribute tests

Attic
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Completed TODO items kept around as curios.

* get rid of MooseX::Privacy to speed things up somewhat
* improve error message when expression is unparsable
* clean up tests and add more thorough testing
* allow attribute selectors as well as predicates
* figure out odd warning being emitted by demo code
* add wrap method to forester for use in coercion
* add tag method to forester to reduce coding burden for most adaptations
* add {x,y} style quantifiers
* add =~ as an operand in attribute tests
* create tests for equality measures in attribute tests
* finish documenting equality measures in attribute tests
- remove redundant extended attributes
* make sure there is some cardinality attribute
* allow multi-line expressions with comments
* rename TPath::Test::XOR to TPath::Test::One
* update grammar section of documentation
* die instead of confessing in grammar and compiler
* refactor to use a context object instead of a bunch of parameters
- create a previous context attribute
- allow qname quoting in literals
* fix \p{PosixPunct} issue with v5.10 on BSD
* comb documentation for pre-TPath::Context parameter lists
* document previous:: axis
