Handle NPE within a Failure

Handle NullPointerException within a Failure where possible. For example if a client passes null to the map method instead of a valid Function then the result will be a Failure and no NPE is thrown. This is because the result of map is of type Try too. However if one passes null to forEach, whose result type is void, the only reasonable solution in this case is to fail with a NullPointerException

AutoCloseable and Throwable

Add AutoCloseable handling. Plus now the library traps all Throwable types but keeps not handling Error types by relaunching them. Thanks to @gtrefs for his contribution.

Add TryBinaryOperator

A BinaryOperator helper which simplifies working with binary operators over Try values, e.g. when reducing a Stream of Try values. Thanks to @oxc for his contribution.

First published version

Note that its version starts with 0 so anything may change at any time. The public API should not be considered stable. In this sense I'll strive to follow SemVer for versioning.