Lectern

Feature
* Add hidden fragments ([`510a213`](https://github.com/mcbeet/lectern/commit/510a2131906257893e23e452dee6336dc38a94eb))

Fix
* Report line number in error messages ([`c998d68`](https://github.com/mcbeet/lectern/commit/c998d6877c33a91d6ef6a8f9b5cac8dbd0db53dd))
* Take the backticks into account for code fence start line ([`a2c442c`](https://github.com/mcbeet/lectern/commit/a2c442c628ea1087d8f898b9ff504f627070f2f2))

Fix
* Rename get_markdown prefix argument ([`85650fa`](https://github.com/mcbeet/lectern/commit/85650fa930fdeb27b24244b772412e72030b14d3))

Feature
* Add lectern scripts ([`0890b9d`](https://github.com/mcbeet/lectern/commit/0890b9dafd219a4ff9a19698c29def0e1d77e855))
* Add markdown prefetcher ([`e5f65dd`](https://github.com/mcbeet/lectern/commit/e5f65dd0ed01b1066723a176c221627412e12762))
* Add fragment location ([`d79f987`](https://github.com/mcbeet/lectern/commit/d79f987142a1148171cc005aceb6698c2edb564a))
* Enhance pytest explanation ([`8f9b18d`](https://github.com/mcbeet/lectern/commit/8f9b18dbc94e1cd760897826fc30254ad1a4718d))

Fix
* Accidentally broke emitted filenames ([`5f034b5`](https://github.com/mcbeet/lectern/commit/5f034b59db0cf64fe056650983ae36efeae98f24))
* Lanternmc.com now returns a 403 ([`faaa2d3`](https://github.com/mcbeet/lectern/commit/faaa2d3b26bb1b20b3ae6ad73255edb6e11b0840))

Documentation
* Document lectern scripts ([`fea9bbf`](https://github.com/mcbeet/lectern/commit/fea9bbf7682cd756022869eccdccd67a67e532d5))
* Document --prefetch-urls ([`4b4eaae`](https://github.com/mcbeet/lectern/commit/4b4eaae89fcd118eab2a3ff9a81cd3f340b4f61b))

Fix
* Make pyright happy ([`f15700c`](https://github.com/mcbeet/lectern/commit/f15700c1c5a5348248ac9947a167fe3931d74c31))

Feature
* Add merge modifier ([`907b630`](https://github.com/mcbeet/lectern/commit/907b630a23bf3f4d88c7a343c529a6a6e2fce07b))
* Add append modifier ([`d4e8be4`](https://github.com/mcbeet/lectern/commit/d4e8be4fb54da6c75b959ce569974b612aedde1a))
* Add base64 modifier ([`acd9d77`](https://github.com/mcbeet/lectern/commit/acd9d7740df3d519b7a19d59f1b98af0d0092d76))

Fix
* Don't set any cache timeout ([`ebbb5a6`](https://github.com/mcbeet/lectern/commit/ebbb5a6710c8e63fdfe73d9dc7b07848c4ca6818))
* Report unexpected arguments for skip directive ([`f7ff720`](https://github.com/mcbeet/lectern/commit/f7ff720b7444135d888154940f7ed226e0a9dfdb))
* Add item_modifier directive ([`5e034d5`](https://github.com/mcbeet/lectern/commit/5e034d57f36a1f8719e88cd653e7fab8ffbfb5c2))
* Don't cache data url ([`c7517a8`](https://github.com/mcbeet/lectern/commit/c7517a844a3c09da9a448f8742c69f30b9478cc2))

Documentation
* Udpate readme ([`a110a82`](https://github.com/mcbeet/lectern/commit/a110a823f333f277deff7137f32b133eb2d16ce5))

Feature
* Serialize images ([`7cf6fd9`](https://github.com/mcbeet/lectern/commit/7cf6fd944533a4ea9210f1f795bc4839c1a793de))
* Extract image fragments ([`1c6b71b`](https://github.com/mcbeet/lectern/commit/1c6b71bd0008163226394d77b8909f7459584732))

Fix
* Use match_tokens() to check for a single code_inline ([`7117521`](https://github.com/mcbeet/lectern/commit/7117521388f5b76e0085d19301d1a9d5d5b7d86f))