feat: add debug logging of requests/responses

This commit adds debug logging of outbound requests and inbound
responses.  These will be logged if log level "debug" is enabled.

BREAKING CHANGE: several methods added to Logger interface

Several methods were added to the Go core's Logger interface:
SetLogLevel(), GetLogLevel(), and IsLogLevelEnabled().
These additional methods will need to be added to any
user implementations of the Logger interface.

BREAKING CHANGE: additional parameter added to NewLogger() signature

The NewLogger() function has a new parameter "errorLogger".
Any calls to NewLogger() will need to be modified to include the
new parameter.

BREAKING CHANGE: deprecated unmarshal-related methods have been removed

Several deprecated unmarshal-related methods were removed from the Go core:
- UnmarshalString, UnmarshalStringSlice, UnmarshalStringMap, UnmarshalStringMapSlice
- UnmarshalByteArray, UnmarshalByteArraySlice, UnmarshalByteArrayMap, UnmarshalByteArrayMapSlice
- UnmarshalBool, UnmarshalBoolSlice, UnmarshalBoolMap, UnmarshalBoolMapSlice
- UnmarshalInt64, UnmarshalInt64Slice, UnmarshalInt64Map, UnmarshalInt64MapSlice
- UnmarshalFloat32, UnmarshalFloat32Slice, UnmarshalFloat32Map, UnmarshalFloat32MapSlice
- UnmarshalFloat64, UnmarshalFloat64Slice, UnmarshalFloat64Map, UnmarshalFloat64MapSlice
- UnmarshalUUID, UnmarshalUUIDSlice, UnmarshalUUIDMap, UnmarshalUUIDMapSlice
- UnmarshalDate, UnmarshalDateSlice, UnmarshalDateMap, UnmarshalDateMapSlice
- UnmarshalDateTime, UnmarshalDateTimeSlice, UnmarshalDateTimeMap, UnmarshalDateTimeMapSlice
- UnmarshalObject, UnmarshalObjectSlice
- UnmarshalAny, UnmarshalAnySlice, UnmarshalAnyMap, UnmarshalAnyMapSlice
These methods are no longer used by code emitted by the Go generator.  If you
have old generated Go code that still uses these methods, then you should continue
using version 4 of the Go core, or regenerate your SDK code using a new version of the
SDK generator.

.bumpversion.cfg

@@ -3,23 +3,22 @@ current_version = 4.10.0
 commit = True
 message = Update version numbers from {current_version} -> {new_version} [skip ci]
 
-[bumpversion:file:v4/core/version.go]
+[bumpversion:file:v5/core/version.go]
 search = __VERSION__ = "{current_version}"
 replace = __VERSION__ = "{new_version}"
 
-[bumpversion:file:v4/go.mod]
+[bumpversion:file:README.md]
+search = {current_version}
+replace = {new_version}
+
+[bumpversion:file:CONTRIBUTING.md]
 parse = (?P<major>\d+)
 serialize = {major}
-search = module github.com/IBM/go-sdk-core/v{current_version}
-replace = module github.com/IBM/go-sdk-core/v{new_version}
+search = v{current_version}
+replace = v{new_version}
 
-[bumpversion:file:Makefile]
+[bumpversion:file:Authentication.md]
 parse = (?P<major>\d+)
 serialize = {major}
-search = VDIR=v{current_version}
-replace = VDIR=v{new_version}
-
-[bumpversion:file:README.md]
-search = {current_version}
-replace = {new_version}
-
+search = v{current_version}
+replace = v{new_version}

Makefile

@@ -1,6 +1,6 @@
 # Makefile to build go-sdk-core library
 
-VDIR=v4
+VDIR=v5
 
 all: build test lint tidy