This approach is incompatible with the sys.path extension approach
in the next commit which is used to to find the vendored copy of
secp256k1lab, so use __file__ instead which works as well.
Updated sequence diagrams to use text format instead of mermaid syntax.
I cargo cult'd the RFC Rules:
> “How are images handled for the plain text version of an RFC?”
> The RFC Editor will accept both ASCII art and SVG. If only ASCII art is provided, it will be included in all publication formats. If ASCII art and SVG are both provided, ASCII art will be included in the plain text, and SVG in all other outputs. A note indicating alternative artwork is available is strongly advised. If only SVG is provided, a URI will be included in the plain-text publication format pointing to the HTML version. All artwork and figures should have a complete written description to support assisted reader technology.
see: https://www.rfc-editor.org/rse/format-faq/
Since BIPs don't publish html/pdf renders, ASCII art seems like the right choice to render everywhere. Since normative prose is already provided, I chose not to include a written description of the diagrams to support assisted reader tech.
The Copyright section specifies additional conditions, so the License
header is not correct (or at least misleading). So let's just remove it.
This is pragmatic because the field was only added as part of the
activation of BIP 2 anyway, and there are other old BIPs with a License
header.
BIP2 states that the Discussions-To header should only be used if the
proposal was discussed somewhere else beside the Bitcoin Developer
Mailing List. Therefore, the only use of the Discussions-To header in
the repository is unnecessary and can be removed before the header is
abolished.
```
sed -z -i 's/Author: /Authors: /' bip-0*.md
sed -z -i 's/Author: /Authors: /' bip-0*.mediawiki
```
Also align correctly in case of multiple authors.
Also line up with additional items in the lines below.
```
sed -i -z 's/ Post-History: / Discussion: /' bip-0*.md
sed -i -z 's/ Post-History: / Discussion: /' bip-0*.mediawiki
```
```
sed -z -i 's/Type: Standards Track/Type: Specification/' bip-0*.md
sed -z -i 's/Type: Standards Track/Type: Specification/' bip-0*.mediawiki
```
After the scripted changes, the changes to BIP-40, BIP-41, and BIP-63
were undone, because it breaks CI.
These three BIPs only exist conceptually and their proposal documents
are missing which causes changes to them ot break the CI. I defer the
changes to these BIPs to a separate pull request to get CI to pass.
Amend CI script to new statuses and update existing status field values
in table and BIPs.
```
sed -z -i 's/Status: Proposed/Status: Complete/' bip-0*.md
sed -z -i 's/Status: Proposed/Status: Complete/' bip-0*.mediawiki
sed -i 's/| Proposed/| Complete/' README.mediawiki
```
