Update asset filename in README

Update version number

Debounce filter input

Entering input too quickly (e.g. holding a single key) causes array
indexing errors in the tview library. This is most likely a concurrency
issue caused by a race condition on the `outputWriter` in the filter
input's asynchronous `ChangedFunc`.

My solution to this problem is to debounce the filter input so that the
filter is only executed at most every millisecond. This causes a
noticeable amount of input latency when a single key is held down, but
it's better than the program crashing.

Remove superfluous example in README

Use canonical Makefile variable names

Makefile conventions use lowercase for `prefix` and `bindir`, as well as
`install -d` over `mkdir -p` [1].

[1]: https://www.gnu.org/software/make/manual/html_node/Makefile-Conventions.html#Makefile-Conventions

Fix asset name in README example

Update build manifest

Add build manifest

Read initial filter from file with -f flag

Update installation instructions in README

Add command to print version

Strip binary to reduce file size

Print filter to stderr on exit

Update asciicast url in README

Error if no data on stdin when trying to read

Add commandline flags to pass through to jq

Add gitignore file

Update README

Add install target to Makefile

Remove minimum height requirement from input field

Set input field text to red on invalid filter