Fix bash command for litestream docker-entrypoint (#217)

Add SQLite to Nix flake (#213)

Add custom character limit to pastes (#196)

# Background

Recently I've been looking at alternatives to the service 0x0.st for
pasting log files to. Logpaste seems like the perfect replacement, but
it has limits on file size. Adding the ability for administrators to add
custom file sizes would allow admins to make the file size the
equivalent of 0x0's (512 MiB) or even larger. It would also allow them
to set smaller limits as well if resources are limited or if the content
being pasted doesn't warrant large sizes.

# Changes

- The default limit is now `2 * 1024 * 1024`, or 2 MiB instead of `2 *
1000 * 1000`, 2 MB
- Add cli flag `-maxsize int` to allow admins to set an arbitrary limit
on paste file sizes if they would like to
- The argument is passed in by # of MiB (so for a 512MiB limit,
`-maxsize 512`, or for the default 2MiB, `-maxsize 2`)
- Add field `maxCharLimit` to the `defaultServer` struct for storing the
given size
- Add fields to `handlers/paste_test.go` to use the new struct field in
order for tests to pass
- Replace instances of `MaxPasteCharacters` with `s.maxCharLimit`

---------

Co-authored-by: Michael Lynch <[email protected]>

Add cleaner handling for when entry is not found (#158)

* Add cleaner handling for when entry is not found

* Fix unit tests

Build Docker images in CircleCI (#146)

User CircleCI machine image to deploy (#141)

Upgrade to litestream 0.3.7 (#136)

Add a dark mode option (#121)

* Add a dark mode option

* Add dark mode options to Docker and README

Update Litestream to 0.3.6 (#118)

Upgrade cypress to 8.1.0 (#116)