Support # embedded in symbol names

[bpsm]

// Symbols begin with a non-numeric character and can contain
// alphanumeric characters and `. * + ! - _ ?  $ % & = < >`. If `-`,
// `+` or `.` are the first character, the second character (if any)
// must be non-numeric. Additionally, `: #` are allowed as constituent
// characters in symbols other than as the first character.

It appears that edn-java parses symbols with embedded "#" incorrectly. Given the text [a#b {}] we expect a vector of these two items:

1. The symbol a#b
2. The empty map

Instead we get these two items:

1. The symbol a
2. The empty map, tagged as #b

[bpsm]

This is implemented in 0.7.0