From: Philipp Spitzer <philipp@spitzer.priv.at>
Date: Tue, 26 Feb 2019 22:24:06 +0000 (+0100)
Subject: Rename function add_month to first_of_month and add functionality do subtract a month.
X-Git-Url: https://git.toastfreeware.priv.at/chrisu/seepark.git/commitdiff_plain/a6944dd859cdb37e57ece09281a187097585f65b?ds=sidebyside;hp=a6944dd859cdb37e57ece09281a187097585f65b

Rename function add_month to first_of_month and add functionality do subtract a month.
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