Include images as attachments in ActivityStreams data

Add conditional for preserving lang metadata

Update writefreely-web image in docker-compose.yml

Case insensitive language highlighting matching

Fixes problem where all links were breaking in gopher

Bump github.com/microcosm-cc/bluemonday from 1.0.4 to 1.0.5

Bumps [github.com/microcosm-cc/bluemonday](https://github.com/microcosm-cc/bluemonday) from 1.0.4 to 1.0.5.
- [Release notes](https://github.com/microcosm-cc/bluemonday/releases)
- [Commits](https://github.com/microcosm-cc/bluemonday/compare/v1.0.4...v1.0.5)

Signed-off-by: dependabot[bot] <support@github.com>

Bump github.com/go-sql-driver/mysql from 1.5.0 to 1.6.0

Bump github.com/hashicorp/go-multierror from 1.1.0 to 1.1.1

Bumps [github.com/go-sql-driver/mysql](https://github.com/go-sql-driver/mysql) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/go-sql-driver/mysql/releases)
- [Changelog](https://github.com/go-sql-driver/mysql/blob/master/CHANGELOG.md)
- [Commits](https://github.com/go-sql-driver/mysql/compare/v1.5.0...v1.6.0)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [github.com/hashicorp/go-multierror](https://github.com/hashicorp/go-multierror) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/hashicorp/go-multierror/releases)
- [Commits](https://github.com/hashicorp/go-multierror/compare/v1.1.0...v1.1.1)

Signed-off-by: dependabot[bot] <support@github.com>

Fix following from Mastodon with Authorized Fetch enabled

Ref T709

Post signature improvements

Generic OAuth userinfo properies now configurable

Support `slug` parameter when publishing a post

This skips the silenced-user check.

Ref T820

This skips the silenced-user check.

Ref T820

Ref T820

This fixes federation with Mastodon instances that have Authorized
Fetch turned on by signing the GET request to fetch the actor when
a blog is first followed.

Ref T820

Use HTMLContent field in RSS feed

Add WYSIWYG editor option

Support ActivityPub Notes

Bump github.com/stretchr/testify from 1.6.1 to 1.7.0

Bump github.com/mattn/go-sqlite3 from 1.14.4 to 1.14.6

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.6.1 to 1.7.0.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](https://github.com/stretchr/testify/compare/v1.6.1...v1.7.0)

Signed-off-by: dependabot[bot] <support@github.com>

Bump github.com/urfave/cli/v2 from 2.2.0 to 2.3.0

Bumps [github.com/mattn/go-sqlite3](https://github.com/mattn/go-sqlite3) from 1.14.4 to 1.14.6.
- [Release notes](https://github.com/mattn/go-sqlite3/releases)
- [Commits](https://github.com/mattn/go-sqlite3/compare/v1.14.4...v1.14.6)

Signed-off-by: dependabot[bot] <support@github.com>

Bump github.com/fatih/color from 1.9.0 to 1.10.0

Bumps [github.com/fatih/color](https://github.com/fatih/color) from 1.9.0 to 1.10.0.
- [Release notes](https://github.com/fatih/color/releases)
- [Commits](https://github.com/fatih/color/compare/v1.9.0...v1.10.0)

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [github.com/urfave/cli/v2](https://github.com/urfave/cli) from 2.2.0 to 2.3.0.
- [Release notes](https://github.com/urfave/cli/releases)
- [Changelog](https://github.com/urfave/cli/blob/master/docs/CHANGELOG.md)
- [Commits](https://github.com/urfave/cli/compare/v2.2.0...v2.3.0)

Signed-off-by: dependabot[bot] <support@github.com>

Bump gopkg.in/ini.v1 from 1.61.0 to 1.62.0

This uses String.replace() instead of String.replaceAll().

If a post contains <!--nosig--> anywhere in the body, the post will render
without a post signature on it.

Ref T815

Ref T814

Closes T811

This makes it so that if a post is updated, it will retain the language metadata rather than revert back.

Updated with the official writeas/writefreely image on Docker Hub.

This automatically lowercases language names used in code blocks when finding highlighting scripts for them, since highlightJS defines all languages with lowercase names.

This will derive the host from the configured host by stripping the protocol from the URI