v0.2.1

[tobozo]

• New callback setters (need tuning/feedback) fixes Reporting status during the update process #87 fixes Return error codes when calling execHTTPcheck #89 :
  • setUpdateBeginFailCb
  • setUpdateEndCb
  • setUpdateCheckFailCb
  • setUpdateFinishedCb
• Arduino Library Manager compliance (now uses #include <esp32FOTA.hpp>) fixes Library not being updated on manager #85 fixes Arduino Library Manager missing versions #93
• New constructor esp32fota( FOTAConfig_t ) for init with predefined config, fixes Not clear instruction on REAME: check SPIFFS with root_ca.pem (https) and rsa_key.pem (signature check) #83
• New empty constructor to use with getConfig() / setConfig(FOTAConfig_t) for late init
• Improved signature check, fixes Semantic versioning, certificates and authorization #88 fixes No CRC or fall back #71
• Wrapped C semver_t in C++ SemverClass
• Added signed example to test suite
• execOTA() now a bool