Zygmunt Krynicki authored Dec 27, 2021 and Zygmunt Krynicki committed Dec 27, 2021

The decoder gains Decoder.PreserveComments which keeps track of
white-space and comments as input is decoded. Comments are associated
with each parameter, section and with the entire file.

Comments always precede the entity they refer to. Comments for sections
and parameters are associated naturally. Comments associate with files
devoid of normally parsed content.

The Encoder encodes comments for all the objects unconditionally.

Closes: #2


Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>