Release 5.0.1

[prof18]

• Improve Gradle plugin configurations
• Migrate to Android namespace
• Catch exceptions that could happen on database. Fix #105
• Use a SupervisorJob instead of a single job to avoid issue while parsing multiple channels
• Add cancellation support on Okhttp calls
• Pass InputStream to the Parser instead of generating a string and then transform the string into InputStream
• Charset is now optional