not all scrap metadata survives round trip from th2 to WTherion to json and back

[CaverBruce]

Original scrap definition in th2:

scrap 3-HawkesPlan-s1 -projection plan -station-names []@3 -author 2022.05.06 "B Mutton" -copyright 2022 NZSS -scale [0 0 787.4 787.4 0 0 10 10 m]

Scrap definition in resultant th2:

scrap 3-HawkesPlan-s1 -scale [0 0 787.4 787.4 0 0 10 10 m] -projection "plan" -author "2022.05.06" -copyright "2022" undefined -station-names []@3

-author is missing the author's name
-copyright is missing the copyrighter's name (becomes 'undefined').

There may be an issue with data type also (string instead of date).

[CaverBruce]

Checked as discussed in #11 (to be posted soon)
Original scrap definition in th2:
scrap 3-HawkesPlan-s1 -projection plan -station-names []@3 -author 2022.05.06 "B Mutton" -copyright 2022 NZSS -scale [0 0 787.4 787.4 0 0 10 10 m]

Scrap definition in resultant th2:
scrap 3-HawkesPlan-s1 -scale [0 0 787.4 787.4 0 0 10 10 m] -projection "plan" -author "2022.05.06 "B Mutton" -copyright "2022 NZSS" -station-names []@3

• author has inappropriate (and unclosed) quote at start of date field (should be deleted)
• copyright has inappropriate quote at start of date field (should be moved to start of text field)