#253 huddle get does not accept non-scalar dict keys

[ethanp]

Found a bug in how huddle dict objects lookup non-scalar keys. The bug is in huddle::_key_reflexive and stems from the a non-scalar single key being passed via args (variadic mechanism). The problem is that an extra set of curly braces ends up enclosing the key path when it finally gets passed to dict get (which errors). A simple example is:
set h [huddle create {a a} b]
huddle get $h {a a}; # error thrown here

I've seen this bug in huddle versions 0.1.3 through 0.1.5.

A fix for this is attached along with some new tests, the files are modified versions of the huddle 0.1.5 source.

[ethanp]

Modified huddle 0.1.5 test file.

[ethanp]

Here's the patch for the 0.1.5 version of huddle.tcl:
242a243,244
> } elseif {$len == 1} {
> set path [lindex $path 0]

For some reason I could not attach multiple files, so I only attached the test file.