diff --git a/Cargo.lock b/Cargo.lock
index 53ed951..b4e55b5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,12 +2,99 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "anstream"
+version = "0.6.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64e15c1ab1f89faffbf04a634d5e1962e9074f2741eef6d97f3c4e322426d526"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bec1de6f59aedf83baf9ff929c98f2ad654b97c9510f4e70cf6f661d49fd5b1"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb47de1e80c2b463c735db5b217a0ddc39d612e7ac9e2e96a5aed1f57616c1cb"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d36fc52c7f6c869915e99412912f22093507da8d9e942ceaf66fe4b7c14422a"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5bf74e1b6e971609db8ca7a9ce79fd5768ab6ae46441c572e46cf596f59e57f8"
+dependencies = [
+ "anstyle",
+ "windows-sys",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "colorchoice"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3fd119d74b830634cea2a0f58bbd0d54540518a14397557951e79340abc28c0"
+
+[[package]]
+name = "env_filter"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f2c92ceda6ceec50f43169f9ee8424fe2db276791afde7b2cd8bc084cb376ab"
+dependencies = [
+ "log",
+ "regex",
+]
+
+[[package]]
+name = "env_logger"
+version = "0.11.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e13fa619b91fb2381732789fc5de83b45675e882f66623b7d8cb4f643017018d"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "env_filter",
+ "humantime",
+ "log",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.11"
@@ -19,16 +106,42 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "humantime"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
+
+[[package]]
+name = "is_terminal_polyfill"
+version = "1.70.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
+
 [[package]]
 name = "libc"
 version = "0.2.151"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "302d7ab3130588088d277783b1e2d2e10c9e9e4a16dd9050e6ec93fb3e7048f4"
 
+[[package]]
+name = "log"
+version = "0.4.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7a70ba024b9dc04c27ea2f0c0548feb474ec5c54bba33a7f72f873a39d07b24"
+
+[[package]]
+name = "memchr"
+version = "2.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+
 [[package]]
 name = "multimarkov"
-version = "0.5.0"
+version = "1.0.0"
 dependencies = [
+ "env_logger",
+ "log",
  "rand",
 ]
 
@@ -68,8 +181,116 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "regex"
+version = "1.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4219d74c6b67a3654a9fbebc4b419e22126d13d2f3c4a07ee0cb61ff79a79619"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38caf58cc5ef2fed281f89292ef23f6365465ed9a41b7a7754eb4e26496c92df"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a66a03ae7c801facd77a29370b4faec201768915ac14a721ba36f20bc9c209b"
+
+[[package]]
+name = "utf8parse"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/Cargo.toml b/Cargo.toml
index 88e1a05..c557192 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,7 +12,7 @@
 [package]
 edition = "2021"
 name = "multimarkov"
-version = "0.5.0"
+version = "1.0.0"
 authors = ["joeclark-phd <joe@joeclark.net>"]
 description = """
 This is a generic tool for training and using multi-order Markov chains for procedural generation applications
@@ -22,6 +22,12 @@ readme = "README.md"
 license = "MIT"
 repository = "https://github.com/joeclark-phd/multimarkov"
 
+[dependencies]
+log = "0.4.22"
+
 [dependencies.rand]
 version = "0.8.5"
 features = [ "small_rng" ]
+
+[dev-dependencies]
+env_logger = "0.11.5"
diff --git a/README.md b/README.md
index 28f5110..194846f 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,8 @@ is much more likely to draw `'f'` because it has trained a model for what comes
 
 ## Release notes:
 
+**1.0.0**: Replaced `println`s with logging using the `log` crate.  Added logging of the number of known states and trained sequences within the `add_priors` function on `MultiMarkovBuilder`.  It turns out that that step can really explode if you have a large dataset, so this logging may be helpful downstream.  Also: moved the binary target (`main.rs`) into the "examples" directory.  Run it with `cargo run --example main`.
+
 0.5.0: MultiMarkov now implements `Debug`
 
 0.4.0: The addition of a method `with_rng()` on the builder allows you to add a custom RNG, for example, if you want to use a random number seed.  Thanks RicardRC.
diff --git a/src/main.rs b/examples/main.rs
similarity index 91%
rename from src/main.rs
rename to examples/main.rs
index fefb7aa..ac11bae 100644
--- a/src/main.rs
+++ b/examples/main.rs
@@ -1,11 +1,14 @@
-mod builder;
-
 use multimarkov::MultiMarkov;
 use rand::{rngs::SmallRng, SeedableRng};
 use std::fs::File;
 use std::io::{BufRead, BufReader};
 
 fn main() {
+
+    // initialize logging
+    env_logger::builder().filter_level(log::LevelFilter::Debug).init();
+
+
     let file = File::open("resources/romans.txt").unwrap();
     let reader = BufReader::new(file);
     let lines = reader
diff --git a/src/builder.rs b/src/builder.rs
index 3ddec07..e510747 100644
--- a/src/builder.rs
+++ b/src/builder.rs
@@ -1,4 +1,5 @@
 use crate::MultiMarkov;
+use log::{debug, info};
 use rand::{thread_rng, RngCore};
 use std::cmp::max;
 use std::collections::{BTreeMap, HashMap, HashSet};
@@ -80,8 +81,8 @@ where
                 Err(_) => error_count += 1,
             };
         }
-        println!(
-            "{} sequences successfully trained; {} errors",
+        debug!(
+            "{} sequences successfully trained; {} errors.",
             success_count, error_count
         );
         self
@@ -90,7 +91,7 @@ where
     /// Learn all the transitions possible from one training sequence, adding observations to the Markov model.
     fn train_sequence(&mut self, sequence: Vec<T>) -> Result<(), &str> {
         if sequence.len() < 2 {
-            return Err("sequence was too short, must contain at least two states");
+            return Err("Sequence was too short, must contain at least two states.");
         }
 
         // loop backwards through the characters in the sequence
@@ -141,13 +142,15 @@ where
     /// Should be called after training is complete, because only then do we know the full set of
     /// known states, and which transitions are unobserved.
     fn add_priors(&mut self) {
+        let mut num_priors_added: usize = 0;
         match self.prior {
             Some(p) => {
                 for v in self.markov_chain.values_mut() {
                     for a in self.known_states.iter() {
-                        v.entry(a.clone()).or_insert(p);
+                        v.entry(a.clone()).or_insert_with(|| {num_priors_added+=1; p});
                     }
                 }
+                info!("Model has {} known states and {} trained sequences. {} priors added.",self.markov_chain.len(),self.known_states.len(),num_priors_added);
             }
             None => (),
         }