Bumped version numbers to 0.7.0-dev

Cargo.lock

@@ -1527,7 +1527,7 @@ dependencies = [
 
 [[package]]
 name = "nym-client"
-version = "0.6.0"
+version = "0.7.0-dev"
 dependencies = [
  "bs58",
  "built",
@@ -1561,7 +1561,7 @@ dependencies = [
 
 [[package]]
 name = "nym-mixnode"
-version = "0.6.0"
+version = "0.7.0-dev"
 dependencies = [
  "bs58",
  "built",
@@ -1587,7 +1587,7 @@ dependencies = [
 
 [[package]]
 name = "nym-sfw-provider"
-version = "0.6.0"
+version = "0.7.0-dev"
 dependencies = [
  "bs58",
  "built",
@@ -1617,7 +1617,7 @@ dependencies = [
 
 [[package]]
 name = "nym-validator"
-version = "0.6.0"
+version = "0.7.0-dev"
 dependencies = [
  "abci",
  "built",

mixnode/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 build = "build.rs"
 name = "nym-mixnode"
-version = "0.6.0"
+version = "0.7.0-dev"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>", "Jędrzej Stuczyński <andrew@nymtech.net>"]
 edition = "2018"
 

nym-client/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 build = "build.rs"
 name = "nym-client"
-version = "0.6.0"
+version = "0.7.0-dev"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>", "Jędrzej Stuczyński <andrew@nymtech.net>"]
 edition = "2018"
 

sfw-provider/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 build = "build.rs"
 name = "nym-sfw-provider"
-version = "0.6.0"
+version = "0.7.0-dev"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>", "Jędrzej Stuczyński <andrew@nymtech.net>"]
 edition = "2018"
 

validator/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 build = "build.rs"
 name = "nym-validator"
-version = "0.6.0"
+version = "0.7.0-dev"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>", "Jedrzej Stuczynski <andrew@nymtech.net>"]
 edition = "2018"