Cosmetic (skipline).

(cherry picked from commit c285bee21b9307f377d752129620275134bd23b9)
Added remark about dates in mod files and the $ escape parameter.

(cherry picked from commit 4bcf081292730783332713f0b9d1430e2cbd7022)
Fixed typo.

(cherry picked from commit 552cbe34ee6863397901833241a97138c069e7c0)
Cosmetic changes in section "dates class".

(cherry picked from commit 4fb3dc035fec1df378224c8d7913a91883655d29)
Changed documented behaviour of @dseries/save method (do not document the default value of basename).

(cherry picked from commit c20bacac609361a27633ea13de312fa5487acb85)
Cosmetic fixes in section "dseries class".

(cherry picked from commit ba31ac7adea89d44717e876b64262653d468589a)
Added @dseries/mpower method (element-by-element powers).

(cherry picked from commit deed4df5695ab462e9ed184196854303e2b34809)
Deleted trailing white spaces.

(cherry picked from commit a79d24fb09055a3deae12b33c9a389d15ade1cd9)
Closes #361. Document the fact that MCMCs are deterministic in Dynare.

(cherry picked from commit 27dbe4a9970b355a0fe199f58159d95293540ba8)