Switch from error-chain to thiserror (#33)

thiserror provides a simpler interface than error-chain, directly
generating an error enum similar to what could be written by hand. It
also reduces dependencies; error-chain pulls in backtrace which
currently pulls in gimli, which is fairly heavyweight.

This changes the error type's interface, so it'll require a bump to
0.7.0.

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 7a2e522..ba1c627 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,10 +19,10 @@ repository = "samscott89/serde_qs"
 [dependencies]
 actix-web = { version = "2.0", optional = true }
 data-encoding = "2.2.1"
-error-chain = "0.12.2"
 futures = { version = "0.3", optional = true } 
 percent-encoding = "2.1.0"
 serde = "1.0.111"
+thiserror = "1.0.20"
 
 [dev-dependencies]
 csv = "1.1.3"