Fix map constructor syntax

[joewiz]

See eXist-db/exist#2887.

[joewiz]

@dizzzz Thanks! Shall I prepare a new release, or would you prefer to do this? Either way is fine with me.

[dizzzz]

We indeed should prepare a new release, all is set for now. (htough it might be good to verify if the XAR works both on v4 and v5)

[joewiz]

@dizzzz Cool. Shall I just increment the version number (to a new patch release), build the xar and publish it - i.e., the old way? Or is the procedure outlined in #31 ready to go?

[PieterLamers]

jfreechart-showcase/modules/view.xql still has the following (using no longer supported := map key:value separator):

let $config := map {
    $templates:CONFIG_APP_ROOT := $config:app-root,
    $templates:CONFIG_STOP_ON_ERROR := true()
}

fixed that on my localhost. Don't know how to push changes to GIT yet tho.