tag_as_metadata creates invalid syntax when tags are on multiple lines about ledger2beancount

[tbm]

As of 16e44b4 this is fixed by default (i.e. with tag_as_metadata as false).

It still produces invalid beancount syntax when tag_as_metadata is true, but I'm not sure it's worth fixing.

[tbm]

It would actually be possible to fix this now that we parse the whole transaction as one stanza.

[tbm]

I looked into this today and it's feasible but I'm not sure it's worth it.

[tbm]

Just to point out that this is also a problem for posting-level tags:

2018-05-02 * Test
    Assets:Test          10 EUR
    Assets:Test         -10 EUR
        ; :foo:
        ; :bar:

[tbm]

Since I want posting-level tags to work, I am going to fix this.