Do not enable fibers in tracing-tracy

Fibers introduce a significant overhead to each invocation of Tracy
instrumentation calls, which in turn makes all tracing instrumentation
points (with callstack collection disabled) 2x slower than they could
be.

I anticipate that `fibers` still may become unconditional requirement in
the future due to #35, but there's no reason to impose that overhead on
users today.

README.mkd

@@ -45,6 +45,6 @@ The following table lists the version correspondence between the libraries.
 | v0.7.8 | 0.16.0 | 0.12.* | 0.6.* |
 | v0.7.8 | 0.16.0 | 0.12.* | 0.7.* |
 | v0.7.8 | 0.16.0 | 0.12.* | 0.8.* |
-| v0.8.1 | 0.17.0 | 0.13.* | 0.9.* |
-| v0.8.1 | 0.17.* | 0.14.* | ...  |
+| v0.8.1 | 0.17.* | 0.13.* | 0.9.* |
+| v0.8.1 | 0.17.* | 0.14.* | 0.10.* |
 <!-- AUTO-UPDATE -->

tracing-tracy/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tracing-tracy"
-version = "0.9.0"
+version = "0.10.0"
 authors = ["Simonas Kazlauskas <[email protected]>"]
 license = "MIT/Apache-2.0"
 edition = "2018"
@@ -19,7 +19,7 @@ bench = true
 [dependencies]
 tracing-core = { version = "0.1", default-features = false, features = ["std"] }
 tracing-subscriber = { version = "0.3", default-features = false, features = ["fmt", "registry"] }
-client = { package = "tracy-client", path = "../tracy-client", version = "0.13.0", default-features = false, features = ["fibers"] }
+client = { package = "tracy-client", path = "../tracy-client", version = "0.14.0", default-features = false }
 
 [dev-dependencies]
 tracing = { version = "0.1", default-features = false, features = ["std"] }