v2.0.2-rc (#27)

## v2.0.2-rc

### BREAKING CHANGES

* Refactored `config.json` - will need to verify configuration settings prior to mounting

### Issues

* \#12 \[Unit Test\] Complete all providers unit tests
* \#14 \[Unit Test\] SQLite mini-ORM unit tests and cleanup
* \#16 Add support for bucket name in Sia provider
* \#17 Update to common c++ build system
  * A single 64-bit Linux Jenkins server is used to build all Linux and Windows versions
  * All dependency sources are now included
  * MSVC is no longer supported
  * MSYS2 is required for building Windows binaries on Windows
  * OS X support is temporarily disabled
* \#19 \[bug\] Rename file is broken for files that are existing
* \#23 \[bug\] Incorrect file size displayed while upload is pending
* \#24 RocksDB implementations should be transactional
* \#25 Writes should block when maximum cache size is reached
* \#26 Complete ring buffer and direct download support

### Changes from v2.0.1-rc

* Ability to choose between RocksDB and SQLite databases
* Added direct reads and implemented download fallback
* Corrected file times on S3 and Sia providers
* Corrected handling of `chown()` and `chmod()`
* Fixed erroneous download of chunks after resize

Reviewed-on: #27

cmake/libraries/cpp_httplib.cmake

@@ -0,0 +1,32 @@
+if(PROJECT_ENABLE_CPP_HTTPLIB)
+  if(PROJECT_BUILD)
+    add_definitions(
+      -DCPPHTTPLIB_OPENSSL_SUPPORT
+      -DCPPHTTPLIB_TCP_NODELAY=true
+      -DCPPHTTPLIB_ZLIB_SUPPORT
+      -DPROJECT_ENABLE_CPP_HTTPLIB
+    )
+  elseif(NOT PROJECT_IS_MINGW OR CMAKE_HOST_WIN32)
+    ExternalProject_Add(cpphttplib_project
+      PREFIX external
+      URL ${PROJECT_3RD_PARTY_DIR}/cpp-httplib-${CPP_HTTPLIB_VERSION}.tar.gz
+      URL_HASH SHA256=${CPP_HTTPLIB_HASH}
+      LIST_SEPARATOR |
+      CMAKE_ARGS ${PROJECT_EXTERNAL_CMAKE_FLAGS}
+        -DBUILD_SHARED_LIBS=${PROJECT_BUILD_SHARED_LIBS}
+        -DBUILD_STATIC_LIBS=ON
+        -DHTTPLIB_REQUIRE_OPENSSL=${PROJECT_ENABLE_OPENSSL}
+        -DHTTPLIB_REQUIRE_ZLIB=ON
+        -DHTTPLIB_REQUIRE_BROTLI=OFF
+        -DHTTPLIB_TEST=OFF
+        -DOPENSSL_USE_STATIC_LIBS=${OPENSSL_USE_STATIC_LIBS}
+    )
+
+    list(APPEND PROJECT_DEPENDENCIES cpphttplib_project)
+
+    add_dependencies(cpphttplib_project curl_project)
+    if (NOT CMAKE_HOST_WIN32)
+      add_dependencies(cpphttplib_project openssl_project)
+    endif()
+  endif()
+endif()