[lipi] Add 4 schemes and better Vedic support

Schemes:
- Add basic support for Assamese, Kharoshthi, Mon, and Soyombo.

Features:
- Add stronger support for upadhmaniya and jihvamuliya.
- Add limited support for Meetei Mayek.
- Add limited support for Samaveda svaras.

Bug fixes:
- Fix treatment of Malayalam au.
- Add experimental support for Malayalam chillus.
- Use NFC internally to avoid a bug with greedy ISO matching.
- Support ayogavahas used with svaras in Devanagari.
- Fix display for several schemes in the UI.

Code:
- Simplify and clean up `create_schemes.py`.
- Add benchmark test.

README.md

@@ -139,10 +139,9 @@ For details, see the [vidyut-kosha README][vidyut-kosha].
 
 ### [`vidyut-lipi`][vidyut-lipi]
 
-`vidyut-lipi` is an experimental Sanskrit transliteration library that also
+`vidyut-lipi` is a transliteration library for Sanskrit and Pali that also
 supports many of the scripts used within the Indosphere. Our goal is to provide
-a standard transliterator for the Sanskrit ecosystem that is easy to bind to
-other programming languages.
+a standard transliterator that is easy to bind to other programming languages.
 
 For details, see the [vidyut-lipi README][vidyut-lipi].
 
@@ -217,8 +216,6 @@ we are most excited about:
 
 - dependency parsing and *anvaya* generation
 - search indexing that accounts for sandhi and Sanskrit's complex morphology.
-- transliteration, perhaps through a port of [Aksharamukha][aksharamukha]
-- meter recognition
 - support for Vedic Sanskrit
 - implementations of non-Paninian grammars
 

vidyut-lipi/Makefile

@@ -3,3 +3,8 @@ debugger:
 
 test:
 	cargo nextest run --no-fail-fast --status-level=fail && cargo test --doc
+
+# Profiles the program's execution time on OSX. This command will probably not
+# work on other operating systems.
+profile-time-osx:
+	cargo instruments -t time --release --example sample > /dev/null

vidyut-lipi/README.md

@@ -1,12 +1,11 @@
 <div align="center">
 <h1><code>vidyut-lipi</code></h1>
-<p><i>A fast Sanskrit transliterator</i></p>
+<p><i>An Indic transliterator</i></p>
 </div>
 
-`vidyut-lipi` is an experimental Sanskrit transliteration library that also
+`vidyut-lipi` is a transliteration library for Sanskrit and Pali that also
 supports many of the scripts used within the Indosphere. Our goal is to provide
-a standard transliterator for the Sanskrit ecosystem that is easy to bind to
-other programming languages.
+a standard transliterator that is easy to bind to other programming languages.
 
 This [crate][crate] is under active development as part of the [Ambuda][ambuda]
 project. If you enjoy our work and wish to contribute to it, we encourage you

vidyut-lipi/examples/sample.rs

@@ -0,0 +1,15 @@
+use vidyut_lipi::{Lipika, Scheme};
+
+fn main() {
+    let mut input = String::new();
+    for _ in 0..1_000_000 {
+        input.push_str(concat!(
+            "nArAyaRaM namaskftya naraM cEva narottamam . ",
+            "devIM sarasvatIM cEva tato jayamudIrayet .. 1 .."
+        ));
+    }
+
+    let mut lipika = Lipika::new();
+    let output = lipika.transliterate(input, Scheme::Slp1, Scheme::Tibetan);
+    println!("{output}");
+}