Upgrading to wasmer-go 1.0.3

Wasmer v1.0.3 (#6)

* Upgrading to wasmer-go 1.0.3

* fix: Preventing the GC'ing of external functions

* Simplification

* Adding `args_sizes_get` and `args_get` to support TinyGo `-target wasi`

Added wapc_init for function registration

v0.2.1

Adding call to wapc_init for function registration (#2)

Added support for WASI fd_write for TinyGo / Secure by default logger and writer

• Added wasi_unstable fd_write in order to support TinyGo
• The logger for waPC __console_log and writer for WASI fd_write are unset/secure by default and must be set explicitly via SetLogger and SetWriter (which can be wapc.Println and wapc.Print respectively for writing to standard out)