optional bounds for price queries

[Xeverous]

There should be a way to specify only lower or upper price bound of the query. Currently if you want 100c+ divination cards you can write $divination | price(100, 999999) however such workaround:

• is not very appealing, unintuitive to use
• has a hidden limit defined by the implementation (max integer value)
• may cause hidden problems (when eg a card giving mirror is worth some huge number in chaos)

Current idea: _ keyword, indicating "no value". That is, $divination | price(100, _). One might propose price(100,) but it might look weird and I would like to avoid optional tokens in the grammar.

Any thoughts?

[Xeverous]

Ready in a4dd1332bc1b84b8d46ad3e717f4ced874b8b34a. Needs documentation

[Xeverous]

Documentation added in 311547a790f3d640a77fc1a67552f2d56bf3d445.