Add option to make write more git diff-friendly

[IanButterworth]

The timing comments and sorting of precompile statements by time makes the precompile file a bit unfriendly to git diffs making it tricky to write a bot to update precompile statements.

Perhaps turning those both off could be a kwarg option?

[timholy]

With SnoopPrecompile I am almost tempted to eliminate this aspect of SnoopPrecompile altogether (in v3). (One motivation: #312 (comment)) Thoughts?

[ronisbr]

Hi @timholy !

In my case, if this feature if removed, I will have some problems and probably will need to write precompilation statements manually. The package works by connecting to a database. All the functions depends on an active connection. The connection to database is protected by a password and I do not want to write it down in the source files.

Today, I run SnoopCompile to dump the precompile statements. In this stage, I have a working connection and I manually type the password.

[IanButterworth]

We have a similar use case, where precompile statements are collected on a different machine to where they are executed, but we use --trace-compile directly for that collection.