Pre-release commit

Anything below this first part is definitely me being astounded
This is the commit where it is in a working state that isn't exactly
primitive, but it's not comprehensive, fully fleshed out, or polished
either. But I like where it's going

You wouldn't believe it.
I came back to this after a MASSIVE crash out with how HUGE and CLUNKY
trying to use the AWS SDK was.
Well
Guess what
GUESS
Literally I just went to test it this morning and I freaking KID YOU NOT
it just worked.
no changes.
it just worked.
YOU WANNA KNOW HOW I CAN TELL?
Look at this FREAKING COMMIT and see that ALL THAT CHANGED was the
todo.md FILE
literally
what
the
fart

I shouldn't complain but OH MY GOODNESS
I spent SO LONG working on it and it turned out it WASN'T all for naught
because I guess something was just...stuck. Bad credentials somehow? I
don't know anymore.
I'm just glad it's over.

Cargo.toml

@@ -1,32 +1,23 @@
 [package]
 name = "r2client"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2024"
 
 [lib]
 
 [dependencies]
-sha2 = "0.10.9"
-bytes = "1.10.1"
-reqwest = { version = "0.12.19", features = ["blocking"] }
-chrono = "0.4.41"
-hex = "0.4.3"
-hmac = "0.12.1"
+reqwest = "0.12.19"
 xmltree = "0.11.0"
 thiserror = "2"
-async-trait = "0.1.89"
-async-std = { version = "1.0", optional = true }
-tokio = { version = "1.0", features = ["rt-multi-thread"], optional = true }
-futures-executor = { version = "0.3", optional = true }
-urlencoding = "2.1.3"
 http = "1.3.1"
+aws_sigv4 = { path = "../aws_sigv4/" }
+log = "0.4.28"
 
 [dev-dependencies]
 tokio = { version = "1", features = ["full", "macros", "rt-multi-thread"] }
 dotenv = "0.15"
 
 [features]
-async = ["tokio"]
+async = []
 default = ["async"]
-sync = ["tokio/rt-multi-thread", "futures-executor"]
-async-std-runtime = ["async-std"]
+sync = ["reqwest/blocking"]